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Photo: lachrimae72, CC0 via Wikimedia Commons
Tours must be purchased in advance online or by phone. Grounds are open daily, weather permitting. Frank Lloyd Wright's most famous structure and considered one of the finest works of architecture in the country, the house perched atop a waterfall is open for tours. One of eight buildings by Wright to be listed as a world heritage site.
Fallingwater is a house museum in Stewart Township in the Laurel Highlands of southwestern Pennsylvania, United States. Designed by the architect Frank Lloyd Wright, it is built partly over a waterfall on the Bear Run stream. The three-story residence was developed as a weekend retreat for Edgar J. Kaufmann Sr., the owner of Kaufmann's Department Store in Pittsburgh, and his wife Liliane. The Western Pennsylvania Conservancy (WPC), which has operated Fallingwater as a tourist attraction since 1963, maintains 5,000 acres (2,000 ha) surrounding the house.
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Located on a peninsula formed by a meander in the Youghiogeny River, this is a unique habitat which contains many plants that are more common to West Virginia and Maryland than to Pennsylvania, due to the deep gorge which is slightly warmer than the surrounding hills and the river dropping off the seeds it picked up to the south. The peninsula is easily reached from the town of Ohiopyle by walking across the large bridge near the railroad tracks at the north side of town.
Another of Frank Lloyd Wright's famous homes and one of his last, Kentuck Knob is a small one story house made of sandstone and red cypress. Tours are available; tickets must be purchased in advance online or by phone.