Underground city

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Tenjin Underground City in Chūō-ku, Fukuoka, Fukuoka Prefecture, Japan

An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of these. Underground cities may be currently active modern creations or they may be historic including ancient sites, some of which may be entirely or partially open to the public.

The term may also refer to a network of tunnels that connects buildings beneath street level that may house office blocks, shopping centres, metro stations, theatres, and other attractions. These passages can usually be accessed through the public space of any of the buildings connecting to them, and sometimes have separate entries as well. This latter definition encompasses many modern structures, whereas the former more generally covers tunnel systems from ancient times to the present day.

Underground cities are especially functional in cities with very cold or hot climates, because they permit activities to be comfortably accessible year round without regard to the weather. Underground cities are similar in nature to skyway systems and may include some buildings linked by skyways or above-ground corridors rather than underground. Some cities also have tunnels that have been abandoned.<ref name=statesman>Template:Cite web</ref><ref name=chicagotribune>Template:Cite news</ref><ref name=sacramento>Template:Cite news</ref>

Asia

China

Hong Kong

Many MTR stations in Hong Kong form extended underground networks connecting to adjacent buildings and at the basement of some major shopping malls in the area above. In addition, the stations themselves often house a number of retail shops.

Among such, the largest underground network consists of numerous out-of-system passageways within the station complex connecting the Tsim Sha Tsui–East Tsim Sha Tsui stations, government-owned pedestrian underpasses and basements of shopping malls, including the K11 Art Mall. In whole, the underground network spans almost the entirety of the retail heart of Tsim Sha Tsui, from Canton Road to the West and Chatham Road South to the East, and from Victoria Harbour to the South and Cameron Road to the North.<ref>Template:Cite web</ref>

Previously, additional underground networks have been proposed for Causeway Bay in 2006 and in Kwun Tong under Hoi Yuen Road in 2010. As of 2014, studies are underway for underground networks in Tsim Sha Tsui, Kowloon Park, Victoria Park, Causeway Bay, Happy Valley, Admiralty, Wan Chai and Hong Kong Park. However, as of 2024, only the network in Tsim Sha Tsui had been built.

In 2017, The Development Bureau announced that two underground streets will be constructed in Kowloon City District, which would connect Kowloon City, San Po Kong, Kai Tak station and Sung Wong Toi station.<ref>Template:Cite web</ref> The system would be known as “Kai Tak Underground Shopping Street.” As of 2025, the only portions constructed and operational are the basement portion of the AIRSIDE mall and the Cullinan Sky Mall, both of which connect to Kai Tak Station.

Iran

Historical underground cities of Persia include Samen, Nushabad, and Kariz.

  • Kish: an underground city by the name of Hidden Pearl was constructed of roads interlinked 20 meters (66 ft.) under the ground. Shops and restaurants are planned to be built.
  • Tehran: Tehran has made a series of underground pathways in and around Vali-e Asr Metro Station and is in planning stage to increase commercial activity in newly built buildings in the central part of the city. The priorities for future development are expansion of underground connections around Haft-e Tir Metro Station and Meydan-e Vali-e Asr Metro Station.<ref>Template:Cite web</ref>
  • Isfahan: with the completion of Imam Hosein Metro Station, and Jahan Nama Complex, and their eventual underground connection, there would be an underground complex of a length of 300 m formed in Isfahan downtown area. Also, not underground per se, with Imam Ali Square's street network being dug underground and a large open space plaza being constructed on the top, the plaza is connected through a series of covered bazaar pathways of a length exceeding 4 km, connecting it to Naqsh-e Jahan Square.
  • Nushabad: Nushabad has an underground city that served as a refuge during wars.

Japan

Shiodome City Center underground in Minato, Tokyo, Japan
Tenjin Underground City in Chūō-ku, Fukuoka, Fukuoka Prefecture, Japan

Singapore

South Korea

Taiwan

Template:See also

An underground mall in Taipei connecting two Taipei Metro stations

Taipei has two major underground streets connecting two or more metro stations. In addition, there is a large underground shopping mall near the main train station.

Major underground streets that connects multiple metro stations：

Minor underground streets that connects to a single metro station:

Kaohsiung used to host the first underground mall in Taiwan. Opened in 1978, the Kaohsiung underground mall suffered a fire on 18 December 1989, and the underground mall had been closed to public ever since.<ref>Template:Cite web</ref>

Turkey

  • Cappadocia contains several historical underground cities carved out of unusual geological formations formed via the eruptions of ancient volcanoes. The cities were initially inhabited by the Hittites, then later by early Christians as hiding places. They are now archeological and tourist sites but are not generally occupied (see Kaymakli Underground City, Derinkuyu underground city, Özkonak Underground City, Mazı Underground City). The latest large underground city was discovered in 2007 in Gaziemir, Güzelyurt. It was a stopover on the Silk Road, allowing travelers and their camels to rest in safety underground, in a 'fortress' equivalent to a modern hotel.
A typical view from inside the underground city in Derinkuyu, one of the largest underground complexes in Cappadocia. There are few artifacts left from the original builders, mainly just large rocks that were used to block the passage for intruders. Most of the "cities" are corridors, but some places there are rooms large enough to live in, and some rooms that have the cross-like shape of a church, which is probably exactly what they were.
  • Istanbul has Roman-era cisterns, built 2,000 years ago for water storage. It is now a tourist attraction.

Australia

Sydney has a series of underground shopping malls around the Town Hall underground station. The tunnels run south to the George Street cinema district, west under the town hall, and north to Pitt Street Mall through the Queen Victoria Building. The northern branch links Queen Victoria Building with Galleries Victoria, Sydney Central Plaza (which in turn links underground to Westfield Sydney and internally above ground to Centrepoint, Imperial Arcade, Skygarden, Glasshouse and 25 Martin Place). The linked centres run for over Template:Convert. In 2005, Westfield Corporation submitted a development application to link Sydney Central Plaza underground with 3 other properties on Pitt Street Mall and extend the tunnel network by a further Template:Convert or more.

Perth has a small network of underground shopping malls running from the St Georges Terrace entrance to Trinity Arcade to Murray Street Mall.

The small town of Coober Pedy in northern South Australia has numerous underground residences and other facilities. The area was and is extensively mined for opal, and the settlers lived underground to escape the scorching daytime heat, often exceeding Template:Convert.

Melbourne is said to have the largest underground tunnel system in the world spanning over Template:Cvt, with the clandestine group known as the Cave Clan who meet regularly to explore, vandalise, socialise and map out this network. The vast majority of these tunnels are decommissioned or for stormwater purposes.<ref>Template:Cite web</ref>

Europe

Bosnia and Herzegovina

  • Skenderija is a cultural, sports and trade center located in Sarajevo, Bosnia and Herzegovina. In the area of 70,000 square meters there are multipurpose halls for various sports, concert and cultural venues, and trade areas above ground including square. Underground is a modern shopping center "Privredni grad" (English: Commercial City) with numerous confectionery shops, restaurants, coffee bars and other spaces.<ref name="skenderija-o-nama">Template:Cite web</ref><ref name="radiosarajevo.ba-skenderija">Template:Cite web</ref>
  • The Sarajevo Tunnel (Serbo-Croatian: Sarajevski tunel / Сарајевски тунел), also known as Tunel spasa (Тунел спаса, English: Tunnel of salvation) and Tunnel of Hope, was a tunnel constructed between March and June 1993 during the Siege of Sarajevo in the midst of the Bosnian War.

Croatia

Czechia

  • Znojmo has a vast labyrinth of underground passageways and cellars known as the Znojmo Catacombs. They were originally developed for defensive purposes.

Finland

A "compass square" of Asematunneli, an underground shopping center near the Helsinki Central railway station

France

  • Paris:
    • The mines of Paris are several disconnected networks of more than Template:Convert of mining tunnels started in the 13th century and dominated by the "large south network" on the Left Bank, of which Template:Convert was repurposed from 1786 as the Catacombs of Paris ossuary, the final resting place of 6-7 million Parisians.<ref>Template:Usurped parislogue.com Template:Dead link</ref> Other parts of the tunnel network have long been closed off for safety reasons, but the tunnels have served as safe passageways during war and revolution, routes for urban explorers, and venues for unauthorized cultural activities.
    • La Défense, the major business district northwest of the city center built in the 1960s, has an extensive network of commercial passageways under a vast plaza centered on the Gare de La Défense and radiating out to connect with surrounding buildings, notably the large Les Quatre Temps shopping center and CNIT, but enabling access to many buildings of the district.
    • The Forum des Halles is a partially underground multilevel commercial and shopping center connected to the massive underground transit hub Chatelet-Les-Halles. Opened in 1979, passageways extend west under the Jardin Nelson Mandela for several city blocks, and within the fare zone of the Paris Metro, stretch half a kilometer south to the banks of the River Seine.<ref>Image</ref>
  • Naours: Template:Convert below the Picardy village of Naours (between Doullens and Amiens), the 28 galleries (Template:Convert long) of an ancient limestone quarry (exploited since the 3rd century c.e.) have long been used as shelter by the population seeking refuge from invaders. Occupied by the Triple Entente forces during WWI, and then used as headquarters by the German Army during the WWII occupation of France, the galleries are now open to visitors.
  • Arras: during World War I, the French and British Army built a tunnel system (boves) based upon the already existing adits from a formerly used quarry. Scots and Englishmen used the quarry below the quarter Saint-Sauveur and called it "Glasgow", "Manchester" and "Liverpool". The New Zealand Army (bonded with the British Army) used the quarry for constructing another tunnel system below the quarter Ronville and called it "Wellington", "Auckland" and "Nelson".<ref>Template:Cite web</ref> Soldiers from these armed forces hid in the tunnels for several days. On April 9, 1917, 5:30 am, 24,000 soldiers sortied from there to encounter German troops.<ref>Template:Cite web</ref>

Germany

  • Berlin: several buildings on the east side of Friedrichstraße, from Quartier 205 (Friedrichstraße 70) northwards up to Galerie Lafayette are connected to each other. Businesses are on both sides of the underground street so that it appears to be inside a building all the time, even when it crosses Taubenstraße underground.
Extensive underground bunkers still exist all throughout the city centre, although they are largely sealed off and closed to the public.
All of the buildings at the large Charité Virchow campus are connected via a system of spacious tunnels. In addition to employee use, particularly during inclement weather, there is also a rudimentary robotic system via which mail and packages are delivered across campus.
  • Frankfurt am Main: underground shopping malls, called 'B-Ebene' in Frankfurt, of considerable size are found at Hauptbahnhof (central station) and Hauptwache.
  • Hamburg: the Jungfernstieg and Rathaus subway stations and several entrances are connected by pedestrian tunnels, some of them contain shops. There is a direct access to the Europapassage shopping mall.
  • Munich: underground shopping mall at Karlsplatz/Stachus. This combines the underpass that leads to the pedestrian area and the entry to the subway system.
  • Stuttgart: there is a large underground shopping mall (Klettpassage) connecting the Hauptbahnhof (central station) with the main shopping street, the Königstraße.

Greece

In Thessaloniki, Hellenistic, Roman, Byzantine, and Ottoman monuments coexist underground and several of these have been discovered and merged together. Monuments such as the Catacombs of St. John and the underground museum of the Agora have limited access and many are not permitted to enter even to the locals by the Archaeological Department of the Thessaloniki underground Metro project.<ref>Template:Cite web</ref>

Hungary

Italy

Netherlands

In general, many large railway stations house underground hallways featuring shops, restaurants, banks and money exchange offices. A striking example of such stations would be the main hallway of the Amsterdam central station, which connects to the city's metro system, although due to renovation and re-building it was temporarily (2012–2015) not possible to walk from the subway to the train station without going outside.

  • Maastricht: originally a casemate, the kazematten of Maastricht form a Template:Convert long network of tunnels underneath the western part of the city.<ref name="Maastricht Kazematten">Template:Cite web</ref> This tunnel network has mainly been used for military purposes. The main construction period of these tunnels lasted from 1575 to 1825.<ref name="Maastricht Kazematten" /> The newest sections of the tunnel network were dug as late as the middle 20th century, built in the Cold War as a shelter for citizens in the event of a nuclear strike on the city.<ref>Template:Cite web</ref>
  • Caves of Maastricht are a far more extensive, system of tunnels with a length over Template:Convert and 20,000 individual corridors lies just west of Maastricht; (Template:Langx).<ref>Template:Cite web</ref> These man-made 'caves' were used as Marl quarries from the 13th century onwards.<ref>Template:Cite web</ref> In World War II, these caves were used to hide large quantities of paintings from the Germans, even including the Nachtwacht.<ref>Template:Cite web</ref> In 1944, construction started on a large public shelter that could have housed 45,000 persons in these caves. The project never saw its completion due to the liberation of Maastricht in the fall of the same year.<ref>Template:Cite web</ref>

Poland

Russia

Spain

  • In Barcelona, there is an abandoned underground mall near Plaça de Catalunya called Avinguda de la Llum, closed since 1990, which had originally been part of a more ambitious project to build an underground city under the centre of Barcelona. Also, some Metro stations or connecting lines in the same station are connected by underground passages over a block in length.
  • Legend has that the many caves and tunnels in Subterranean Toledo under the old part of Toledo were connected and were used by occultists.

Sweden

  • By walking through Stockholm subway stations and indoor shopping malls it is possible to walk indoor through the central business district, partly underground, from Arsenalsgatan subway entrance (Kungsträdgården station) to Kungsbron (north entrance to Cityterminalen bus terminal), covering a distance of between 1 and 2 kilometres.

Switzerland

Ukraine

  • Kyiv: an underground concourse extends underneath Khreschatyk Street from Maidan Nezalezhnosti to Ploshcha Ukrainskykh Heroiv. The concourse connects to the Kyiv Metro and to the Globe shopping mall beneath Maidan Nezalezhnosti.
  • Odesa: a ramified tunnel network made from the former quarries that is famous as Odesa Catacombs covers the historical center of Odesa and some suburban areas.

United Kingdom

  • London:
  • Edinburgh's old town has extensive rooms, tunnels and chambers beneath some areas; of particular note are the Edinburgh Vaults, where overcrowding led people to construct elaborately interconnected buildings in the vaults of the city's South Bridge. There is also an street named Mary King's Close, which was built over in 1753, and is now preserved and open to visitors.<ref>Template:Cite web</ref>
  • Corsham is the location of the Central Government War Headquarters, code name 'Burlington'. Built in the late 1950s in response to the increasing threat of nuclear warfare during the Cold War, the Template:Convert subterranean site was designed to be the main emergency government war headquarters of the UK outside London and safely house up to 4,000 central government personnel in the event of a nuclear strike.
  • Dover contains a series of interconnecting tunnels, that honeycomb both sides of the Dover Valley, carved into the chalk cliffs. These date from ancient times at Dover Castle through to Napoleonic, Second World War and Cold War installations. The Dover Castle complex is the larger, going at least six levels deep and includes a hospital, troop quarters, offices, storage and channel view points. The southern tunnels are mixed between Napoleonic War-era defences, such as the Dover Western Heights, and Second World War-era defences, with some seafront air raid shelters still used for shop storage today. Some have fallen into disrepair and are now closed to the public, but many are still open.
  • In Liverpool, the Williamson Tunnels included the site of an 'underground house' complete with windows (concealed by work for public opening), and an extant and partially excavated 'banqueting hall'.
  • Nottingham has an extensive network of man-made caves, dating back to the Early Middle Ages.
  • In Southport, Nevill Street has the remainders of an underground shopping street, which can now only be accessed from the cellars of buildings on the current street, which was raised by one storey from the original level. One end of the underground street ended at the Marine Lake, close to the pier entrance.
  • There are extensive underground constructions across Britain, such as Chislehurst Caves, built or repurposed as air-raid shelters during World War II.

North America

Canada

PATH entrance, Toronto, Ontario

The cold-winter northern continental climate of much of Canada makes underground pedestrian malls particularly useful in many cities.

United States

Underground passage of the Empire State Plaza, featuring a collection of large-scale abstract modern art
  • Albany, New York: the Empire State Plaza features an underground city which contains banks, a YMCA, restaurants, several food courts, retailers, a police station, a bus station, and a Visitor Center. The Plaza connects several government buildings to the Egg (a state-owned theater), the New York State Museum, the New York State Library, the Corning Tower, legislative offices, judicial offices, and the Times Union Center. The Empire State Plaza Art Collection consists of 92 large-scale paintings, sculptures, and tapestries at various locations along the main corridor, and features works from the New York School of abstract modern art from the 1960s and 1970s.<ref>Template:Cite web</ref>
  • Atlanta, Georgia: the "Underground" represents the original surface level of downtown Atlanta; the present streets are raised roadways (viaducts) built in the 1920s. The shopping center Underground Atlanta, taking advantage of the former street-level storefronts, covers six city blocks and includes retail shopping and restaurants. It was begun in 1968 and re-opened in 1989 after a financially forced closure.<ref>Template:Cite web</ref>
  • Boise, Idaho: the downtown sector's Capitol Mall Complex consists of a large system of networked tunnels that connect all the state buildings. The tunnels have walkways and vehicle passageways. The underground area boasts a geothermal power plant, a banking system, extensive dining areas, parking, a dedicated mail room for the Capitol Mall Complex and a fallout shelter. The main hall is decorated with art from local artists that was collected over a thirty-year time frame. This collection is not often seen by the public as access is limited. Recent remodeling of the Idaho State Capitol Building has added new underground wings that are linked to the Capitol Mall. These new wings have offices, meeting rooms, and records storage areas and were designed to support the Idaho legislature when it is in session.
  • Boston, Massachusetts:
  • Cambridge, Massachusetts: many of the older buildings of the Massachusetts Institute of Technology between Massachusetts Avenue and Ames Street are linked together by underground utility tunnels.
  • Chicago, Illinois: the Chicago Pedway consists of approximately 4 disjointed tunnel systems, the largest covering about 10 blocks, connecting such buildings and transit stations as Metra's Millennium Station, the Chicago Cultural Center, the Macy's (former Marshall Field's) store at State and Randolph, Chicago Transit Authority's State Street and Dearborn Street subway stations, City Hall, and the James R. Thompson Center, along with few residential buildings including Aqua, Columbus Plaza, The Heritage at Millennium Park, the Park Millennium and 200 North Dearborn Apartments.
  • Cleveland, Ohio: the Tower City Center, on the public square at the center of downtown Cleveland, houses a shopping mall with a food court, two hotels, and the Tower City Rapid Transit Station, the central station on RTA's Red, Green, and Blue Lines. The building connects to several office buildings, and also has an enclosed skyway to the Gateway Sports and Entertainment Complex.
  • Crystal City, Virginia: a residential and commercial area of Arlington County, Virginia next to the Ronald Reagan Washington National Airport, Crystal City features an extensive underground city connecting its hotels, office buildings, and apartment towers and is lined with 173 shops, restaurants, banks, medical, and other services.<ref>Template:Cite web</ref>
  • Dallas, Texas: the Dallas Pedestrian Network has a network of tunnels connecting buildings in the downtown area.
  • Dayton, Ohio: the academic section of Wright State University's campus contains nearly two miles (3.18 kilometers) of tunnels<ref name="webapp2.wright.edu">Template:Cite news</ref> that link 20 of the 22 buildings. The tunnels were designed to connect the campus without imprinting the surrounding land.
  • Detroit, Michigan: the Fisher Building, located in New Center, features an underground concourse which connects with the Albert Kahn Building, New Center One, and Cadillac Place (formerly the General Motors Building) via a series of skyways and tunnels.
  • Duluth, Minnesota: the city's downtown sector has an extensive network of skyways and tunnels connecting its buildings, including the Federal Courthouse and Convention Center (DECC).
  • Havre, Montana: the city has an underground area, called "Havre Beneath the Streets", that operates as a tourist attraction.<ref>Template:Cite web</ref>
  • Houston, Texas: the seven-mile (11 km) Houston tunnel system is set about twenty feet below Houston's downtown street system and is composed of underground passageways which, with above-ground skywalks, link office towers to hotels, banks, corporate and government offices, restaurants, retail stores, and the Houston Theater District. Only one building, Wells Fargo Plaza, offers direct access from the street to the Tunnel; otherwise, the Tunnel can only be entered via street-level stairs, escalators, or elevators inside a building connected to it.
  • Irvine, California: a network of large tunnels running beneath the University of California, Irvine connects many of the campus' major buildings to a central utility plant. These tunnels are only accessible to maintenance staff, although there are also publicly accessible tunnels which intersect the utility tunnels, such as the one that goes between the main Information & Computer Science building and the Engineering Tower.Template:Citation needed
  • Kansas City, Missouri: the city's SubTropolis is a 55,000,000 square foot (5,060,000 m³), 1,100-acre (4.5 km²) underground business complex running along the Missouri River. The space was originally part of the Bethany Falls limestone mine, and was later repurposed for use as a commercial underground storage facility.
  • Lowell, Massachusetts: At University of Massachusetts Lowell's North Campus,<ref>Template:Cite web</ref> there is an underground pedestrian and utility tunnel system connecting multiple buildings.
  • Minneapolis and Saint Paul, Minnesota: there are three major systems consisting mostly of above-ground skyways in the Twin Cities. The Minneapolis Skyway System covers approximately 11 miles with 62 skyways. St. Paul's skyway system connects buildings in a 30-block radius in the downtown core. On the University of Minnesota Minneapolis and St Paul campuses, the Gopher Way connects most buildings and parking structures together using a number of skyway links and tunnels. A system of tunnels connects state office buildings around the Minnesota State Capitol.<ref>Template:Cite web</ref> A series of tunnels also connect the Hennepin County Government Center, Minneapolis City Hall, and the United States District Court for the District of Minnesota.
  • New York City, New York: several New York City Subway stations have direct access to one or more buildings. Additionally, most of the lower floor of the Rockefeller Center qualifies as an underground city, as it features connections to subways, an extensive underground concourse, building connections, and several restaurants, all below ground. The area around Times Square and the Port Authority Bus Terminal forms an underground network several blocks in size; much of it is within the New York City Subway's fare control. A series of tunnels connect Brookfield Place (New York City) through the World Trade Center's lower levels, to the Fulton Center, forming an underground city with several subway stations and many shops and restaurants.
  • Oklahoma City, Oklahoma: the Oklahoma City Underground (formerly the Oklahoma City Conncourse) is a tunnel system connecting nearly all of the downtown buildings in a 20-square-block area. It is one of the most extensive all-enclosed pedestrian systems in the U.S., extending three-quarters of a mile and connecting over 30 downtown buildings via tunnels or skyways. The original tunnel link was built in 1931 and the system was extended in the 1970s. It underwent a $2 million renovation in 2006–2007, after which the Conncourse was renamed the Underground.<ref>Template:Cite web</ref><ref>Template:Cite news</ref>
  • Philadelphia, Pennsylvania: Center City has several miles of interconnected underground concourses under Market, Broad, and Locust Streets, and JFK Boulevard. The system includes nine rapid transit and regional rail stations served by 23 SEPTA and PATCO lines, and the lower levels of several shopping centers. It is also connected to the lower levels of many office buildings and several department stores and hotels, as well as the customer service counters of the Municipal Services Building. A branch of the US Post Office is located in the Suburban Station section of the concourse.
  • Portland, Oregon: there is a group of connected tunnels from the 19th century known as the Old Portland Underground or Shanghai tunnels.
  • Richmond, Virginia: there are a series of connected tunnels between state government buildings in the city of Richmond. Certain passageways are locked off but a good portion of the tunnels are accessible from buildings. The purpose of the tunnels is not generally known; the two most common explanations are that they were built to allow people to move between buildings in inclement weather or that they were built as part of an emergency evacuation plan.
  • Rochester, Minnesota: the Mayo Clinic's buildings in the downtown area are interconnected with tunnels and skyways. Other businesses are along the corridors, including a number of hotels that often house clinic patients. It is often called a subway, although there are no underground rails in the city.
  • Rochester, New York: Nazareth College in the southeast portion of Rochester has an extensive underground network of tunnels leading from the dormitories to the major buildings on campus. Rochester Institute of Technology has two tunnel networks linking its residence halls, and its academic buildings, but the two networks are unconnected. The University of Rochester has an underground network connecting many of its academic buildings.
  • Seattle, Washington: several modern undergrounds and a historical tour exist. The Westlake Center shopping mall and its surrounding department stores have underground entrances to the mezzanine level of the Westlake light rail station in the Downtown Seattle Transit Tunnel. Another substantial corridor extends from Two Union Square to Rainier Square, with connections to hotels, the 5th Avenue Theatre, and many retail shops along the way. The Seattle Underground Tour in Pioneer Square takes visitors on a humorous guided walk showing the original ground level of many buildings in that area.
Shirley's White House Vicksburg in 1863

Mexico

  • Guanajuato city was built over old silver mines, some of which are used as roads. The Mexico DF metro system has many underground pedestrian walkways connecting stations.

South America

Argentina

Buenos Aires, capital of Argentina, has an extensive number of underground cities in its Subte. Most stations have small shops, bars and kiosks, while main hubs interconnect through underground pedestrian walkways with railroad stations, governmental buildings, or shopping centres. Some have additional mall-like mezzanine levels, with the Centro Obelisk of Buenos Aires area (three lines, four underground levels), Estación Retiro, Estación Constitución, Estación Once, and Federico Lacroze railway station being the most important ones.

Chile

Santiago has some elements of an underground city in its "Metro" subway system. While all stations have a small mezzanine level above the tracks for ticket purchase, some key stations have extensive areas of shops and kiosks in addition. Some stations even have an additional mall-like level between the street and the mezzanine levels.

See also

Template:Div col Other parent categories from the same field:

Types of underground spaces and people, and related topics:

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References

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Template:Man-made and man-related Subterranea Template:Authority control

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