Best enjoyed with the sound turned down

http://www.youtube.com/watch?v=laPU0bS8JOc

although the footage obviously came from a TV show, I think this exhibition may have featured it: http://www.tokyoartbeat.com/event/2004/CCAE

There's a book too
脈動する超高層都市、激変記録35年—西新宿定点撮影