The installation was conceived for the “Looking In” exhibition, which took place in downtown Manhattan one block north of the former World Trade Center, where a high-pressure cleaner shoots green-coloured water from the inside against a shop window every minute for 30 seconds. The jet creates a continuously changing flow structure at the interface between the exterior and interior. Then the jet stops for half a minute and an empty black room with a shallow green pool of water becomes visible. The water disappears through a drain in the centre of the basin and is recycled. The installation is illuminated from above at night.