Visitors in the massive concrete cathedral of the G-Cans water management facility in Tokyo, JapanKeywords: Japan, 日本, Japon, Tokyo, G-cans, 龍Q館, Ryu-Q-Can, 首都圏外郭放水路の龍Q館, concrete, water tank, flood prevention, wall, underground, crowd, interior, 地下 | | Nov 13, 2010 50 mm, 10s, f/16 AF 50mm f/1.4 D Location |