大阪駅の水時計 – Water Clock
It´s not always about projecting. The Water Clock at the South Gate building of Osaka Station City makes visuals from pure water.
Playing tetris on this dot matrix would be awesome 🙂

Yochanan Rauert aka Yochee is working as a VJ in Münster, Germany since 2002 and is the editor and founder of www.visual-society.com