Aquapolis
Aquapolis is a semi-submersible floating marine structure exhibited by the Japanese government at the Okinawa International Maritime Exposition (Ocean Expo, July 19, 1975 - January 18, 1976). It is a structure built by imagining the world's first marine experimental city and future maritime cities, and it became the main venue as a symbol of the Ocean Expo. Producer is Tezuka Osamu. Design is Kiyotake Kiyotake Architectural Design Office, Japan Ocean Development Industry Association. It was attracting attention at the time as a "not seen examples in the world" facility because it forms a semi-diving floating type structure. ...