Museum Wall House #2 in Groningen

You're standing at Wall House 2, on the west side of the Hoornse Meer lake in Groningen. It looks like a work of art, and that's more or less the point. Look at the heart of the building: a big, tall wall of reinforced concrete. Attached to it are four oddly shaped rooms and a long, narrow corridor. It's often described as a mix of Cubist painting, Surrealist sculpture and architecture. Pay attention to the colours, too.