Frank Lloyd Wright (June 8, 1867 – April 9, 1959) was an American architect interior designer, writer, and educator, who designed more than 1,000 structures. Wright believed in designing structures that were in harmony with humanity and its environment, a philosophy he called organic structure. This philosophy was best exemplified by Fallingwater (1935), which has been called “the best all-time work of American architecture”.Wright was a leader of the Prairie School movement of architecture and developed the concept of the Usonian home in Broadacre City, his unique vision for urban planning in the United States. Perhaps uniquely among the great architects, Wright pursued an architecture for everyman rather than every man for one architecture through the careful use of standardisation to achieve accessible tailoring options to for his clients.