On Roppongi Dori in front of
Roppongi Hills is a restored example of the
Metabolism Movement. This sample is from the
Nakagin Capsule Tower (completed in 1972) designed by architect
Kisho Kurokawa. According to the information posted on the side of this specimen, one of these capsules could be built for the cost of a compact car.
If you are interested in learning more, the Mori Art Museum at Roppongi Hills is holding an exhibit,
METABOLISM: The City of the Future, until 15 January 2012.
There are efforts in progress to tear this unique structure down, so if I am in Shimbashi I'll make an extra effort to visit. You can still see it on Google Street View...