Kisho Kurokawa's 13-storey capsule tower was completed in 1972 - now a living example of the architect's Metabolist movement.
The 2.2-metre-high capsules were fabricated off-site and later attached to the building's concrete core.
The tiny 10-square-metre apartments were designed for the busy 'salaryman' working in Tokyo.
The apartments did not have a kitchen, but they did come fully equipped with the latest tech: integrated television, telephone and tape recorder.
Now threatened with demolition, residents of the tower have set up a preservation committee to purchase and restore derelict capsules.
Find out more at: nakagincapsuletower.com
8-16-10 Ginza, Chuo-ku, Tokyo 104-0061, JAPAN
All photos are copyright 51 Squared B.V. - These photographs were taken in March 2019.