A video on Japan’s ‘Parthenon’, a massive underground reservoir built for flood control in Tokyo
The underground ‘Parthenon’ in Japan is a cavernous complex for protecting Tokyo and surrounding areas from catastrophic flooding.
It was built in 2006 at a cost of 230 billion yen ($2.2 billion). This immense structure funnels away & redirects excess water from storm & typhoons to the Kasukabe flood tank. This is the largest facility of its kind in the world.