The Hundertwasser House Vienna (German: Hundertwasserhaus Wien) is an apartment house in Vienna, Austria, designed by Austrian artist Friedensreich Hundertwasser. This landmark of Vienna is located in the 3. district, Kegelgasse 34-38 / Löwengasse 41-43, at [IMG http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Erioll_world.svg/18px-Erioll_world.svg.png]48°12′26″N 16°23′39″E. / 48.20722°N 16.39417°E / 48.20722; 16.39417

The house was built between 1983 and 1986 by architects Univ.-Prof. Joseph Krawina and Peter Pelikan. It features undulating floors ("an uneven floor is a divine melody to the feet"[1]), 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.

Within the house there are 52 apartments, four offices, 16 private terraces and three communal terraces, and a total of 250 trees and bushes. The Hundertwasser House is one of Vienna's most visited buildings and has become part of Austria's cultural heritage.[2]