Kiyonori Kikutake's Aquapolis

Aquapolis was a prototype of a floating city created by Japan's Kiyonori Kikutake.

It was exhibited at the Sea Expo 1975 in Okinawa and shipped to Shanghai in 2004.

Spot Theme

Main Idea

The Aquapolis was build to present the audience an utopian vision of a future life on the sea. As the Expo was designed to envision "the sea we want to see" and human's future engagement with the sea's ressources, a floating city inidicating the sea as human habitat was a main attraction of the show.

Main Features

The Aquapolis was floating on the water surface, held only with a structure of ancors. It crossed the seas two times in it's life, once from Hiroshima to Okinawa after it's construction in the 70's and once for it's disintegration in Shanghai in 2004. During exhibition it was a functioning city was a post office and the Japanese government issuing passports.

All images under Wikimedia Commons License.


More Information

The Aquapolis is featured in German underwater video pioneer Hans Hass' film "Living under water" from 1976. Footage can be seen from 9:30, however the entire film gives interesting insights into the thinking and prospects of that time.

In German, no subtitles.


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  • concrete hell

    Me on January 5th, 2014
  • I don't see the point in posting outdated and clearly absurd ideas. How can this be a productive discussion?

    Kss07 on January 6th, 2014
  • Well at least it is a mobile solution. Most of the "update" ideas are not going as far as this one in terms of mobility. And it is a city solution.

    Akino on January 6th, 2014
  • I don't know why we should consider a maritime steel construction a solution to our very mountainous problem.

    Kss07 on January 6th, 2014



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