The Hundertwasser-Haus is an apartment house in Vienna, Austria, built after the idea and concept of Austrian artist Friedensreich Hundertwasser with architect Joseph Krawina as a co-author. This expressionist landmark of Vienna is located in the Landstraße district on the corner of Kegelgasse and Löwengasse.
The house was built between 1983 and 1985 according to the ideas and concepts of Hundertwasser with architect Univ.-Prof. Joseph Krawina as a co-author and architect Peter Pelikan as a planner. It features undulating floors ("an uneven floor is a divine melody to the feet", a roof covered with earth and grass, and large trees growing from inside the rooms, with limbs extending from windows. Hundertwasser took no payment for the design of the house, declaring that it was worth it, to prevent something ugly from going up in its place.