Frank Lloyd Wright was an American architect known for designing over 1,000 structures in a style called organic architecture that aimed to harmonize buildings with humanity and nature. Some of his most famous works include Fallingwater, the Johnson Wax Headquarters, Unity Temple, and the Solomon R. Guggenheim Museum. The document then discusses Wright's personal style and concepts, including conceiving interior details and using new materials like glass bricks. It provides examples of his Usonian homes like the Hanna Residence, which used a hexagonal floor plan and modular construction system to create affordable houses.