The Hundertwasserhaus is social housing owned by the city of Vienna, and no line on it is straight. The floors undulate, the facade is broken into blocks of clashing colour, and no two windows are identical. Gold onion domes sit on the roofline and ceramic columns hold up the entrance. Some 250 trees and shrubs are planted into the structure, so branches come out of walls and the roof terraces are wooded. The painter Friedensreich Hundertwasser designed it and it was finished in 1985.
He held that the straight line was godless and that a tenant should be able to lean out of a window and paint the wall around it. People live in the building, which is the part visitors forget. There is no lobby to enter and no floor to tour, so you look from the pavement, and residents put up with a permanent audience at their front door. Across the street a former tyre workshop was converted by the same artist into an arcade with a floor that pitches like a deck.