Visitors gather on one of the cantilevered terraces at Fallingwater, a Frank Lloyd Wright design in Pennsylvania. Eight Wright buildings, including Fallingwater, were honored as World Heritage sites by UNESCO, on July 7, 2019.

Visitors gather on one of the cantilevered terraces at Fallingwater, a Frank Lloyd Wright design in Pennsylvania. Eight Wright buildings, including Fallingwater, were honored as World Heritage sites by UNESCO, on July 7, 2019.

Visitors gather on one of the cantilevered terraces at Fallingwater, a Frank Lloyd Wright design in Pennsylvania. Eight Wright buildings, including Fallingwater, were honored as World Heritage sites by UNESCO, on July 7, 2019.

Visitors gather on one of the cantilevered terraces at Fallingwater, a Frank Lloyd Wright design in Pennsylvania. Eight Wright buildings, including Fallingwater, were honored as World Heritage sites by UNESCO, on July 7, 2019