Sky Mile Tower was developed to increase as high as 420 stories above Tokyo Bay.

In 2016, Kohn Pederson Fox Associates and Leslie E. Robertson Associates revealed prepare for the high-rise building as part of a bigger proposition called “Next Tokyo 2045,” though no financing has actually been revealed yet.

If it is constructed, the high-rise building would be a generally domestic area, real estate about 55,000 individuals. The proposition, produced with increasing water level and tropical storm dangers in mind, requires the tower to be surrounded by rings that would separate strong waves. The surrounding waters would likewise include farm plots drifting around.

Multi-level sky lobbies would connect various domestic areas, providing citizens access to shared features like fitness centers, libraries, and stores.