A residence kaufmann; more known as the house of the waterfall (in english: fallingwater)? it is a house designed by the american architect frank lloyd wright; and built between 1936 and 1939 on a waterfall of the bear run river; in fayette county of the state of pennsylvania (united states). today fallingwater is a national monument in the united states that functions as a museum and belongs to the western pennsylvania conservancy.