The CasAnus is a one-room hotel located at the Verbeke Art Foundation in Stekene, Belgium. It's also designed to look like a giant colon.
It was originally created by Dutch artist Joep Van Lieshout, but the structure was renovated into living quarters and now sits on the grounds of the Verbeke Foundation Art Park.
The living space is fairly sparse, with a double bed taking up most of the room. There is an electric point, heater, as well as a shower and toilet at the other end of the room, with hot water.