This is my design for the Dwell Playhouse contest, fall '11.
I tipped a container so that a level floor could be built between what were previously top and bottom corners, opposite of each other. The ceiling height of the first floor was 7' , the second floor has a vaulted ceiling.
The playhouse collects rain water! The rainwater is collected from the gutter at the back of the roof, and is stored in tanks on second floor for gravity fed operation.
