Frank Lloyd Wright (1867 - 1959) is one of the most well-known and influential American architects. He developed his own style and set of architectural principles & patterns, which he referred to as Organic Architecture. This approach focused on creating buildings that grow out of nature in, in particular their site. He often used geometrical interpretations of natural elements such as leaves in the both the forms and detailing of his work.

Wright's weakest areas where his lack of focus on the clients wishes and practical needs. Some of his buildings were criticized for leaking and going significantly over budget. He sometimes went so far as to design features to prevent clients from modifying his buildings, such as using wall surfaces that wallpaper could not be applied to, and permanently attaching furniture to the floor.

Wright designed 362 houses that were built, of which about 300 still stand today. He also built a number of public buildings.