Fallingwater

A 1937 house with horizontal terraces cantilevered over a waterfall in Mill Run, Pennsylvania, and Wright’s defining work of organic architecture.

Reinforced-concrete cantilever slabs are layered above the falls and rock ledges of Bear Run. The house sits over, rather than beside, the landscape.

Stone, concrete, and glass reinforce its horizontal lines, while the hearth and low ceilings alternate between cave-like shelter and open prospect.

It is a textbook study of organic architecture because structure, place, and domestic scale form one composition.

Organic architecture

Architect Frank Lloyd Wright