# Urban roller coasters

I just found back some pictures I took while I was in Japan in 2007 and I thought those two urban Roller Coasters respectively in Tokyo and Osaka would deserve some space in boiteaoutils' big mess.
A lot of cities (Hong Kong, Paris, Rouen etc.) have some theme park permanently or temporarily set inside the city but it never reaches the intrication Japanese roller coasters develops, jumping on buildings' roofs, flirting with the streets and even going through a building (see below).
We are still very far away from Constant' dream for the Homo Ludens (Playful Human) with New Babylon since Roller Coasters do not include any kind of behavior flexibility and human choice; however those urban Russian Mountains (that is how we call roller coasters in French !), suggest a zone of game with architecture's seriousness and rigor that could probably bring us somewhere interesting...