Fallingwater is a house designed by the architect Frank Lloyd Wright in 1935 in the Laurel Highlands of southwest Pennsylvania, about 70 miles southeast of Pittsburgh in the United States. It is built partly over a waterfall on Bear Run in the Mill Run section of Stewart Township, Pennsylvania. The house was designed to serve as a weekend retreat for Liliane and Edgar J. Kaufmann, the owner of Pittsburgh's Kaufmann's Department Store.