Nipponica

Being one of Kurokawa's earliest works, it is also a representative example of the "Metabolism" architecture movement.

Each room is highly independent of the other, and although the design makes it technically possible to replace each room (capsule), in practice, it has never been done because of the difficulty of replacing only some of the capsules. It was intended for the capsules to be replaced every 25 years (the first time in 1997) since completion.

This is a really cool preservation tech demo that shows the interior of a section of Nakagin before it was demolished in 2022