Underground City - Japan

Japan

The top five largest underground "cities" (地下街, chikagai) in Japan are all shopping districts:

• Crysta Nagahori in Chūō-ku, Osaka — 81,765 m2 (880,111 sq ft)
• Yaesu Chikagai in Chūō, Tokyo — 73,253 m2 (788,489 sq ft)
• Kawasaki Azalea in Kawasaki-ku, Kawasaki — 56,704 m2 (610,357 sq ft)
• Central Park Chikagai in Naka-ku, Nagoya — 56,370 m2 (606,762 sq ft)
• Diamor Osaka in Kita-ku, Osaka — 42,977 m2 (462,601 sq ft)

• Osaka has enormous underground networks in the Umeda, Namba, and Shinsaibashi districts, in which Umeda alone includes over 1,200 retail stores and restaurants, as well as subway and intercity rail stations.
• See also Alice City.
• Tokyo's subway lines are owned by Tokyo Metro (9 lines) and Toei (4 lines), mostly within the 23 special wards. Near the center of the city, connecting passages between stations that span a few blocks exist for commuters. Stations such as Shinjuku and Shibuya have underground shopping malls. Tokyo's network of tunnels is seen as one of the many megalopolis features of the city.