Already well-known during his lifetime, Wright was recognized in 1991 by the American Institute of Architects as "the greatest American architect of all time"

Wright's home in Oak Park, Illinois Between 1900 and 1917, his residential designs were " Prairie Houses ", so- called because the design is considered to complement the land around Chicago . These houses featured extended low buildings with shallow, sloping roofs, clean sky lines, suppressed chimneys, overhangs and terraces, using unfinished materials. The houses are credited with being the first examples of the " open plan ." Darwin D. Martin House Wright designed the Robie House in his studio in Oak Park, Illinois between 1908 and 1909. [5] The design precedent for the Robie House was the Ferdinand F. Tomek House in Riverside, Illinois, designed by Wright in 1907-08

Frederick C. Robie House Fallingwater , Bear Run, Pennsylvania (1937) First Unitarian Society Meeting House, Madison , WI (1947) Solomon R. Guggenheim Museum , New York City, New York (1959)

Personal style and concepts Wright practiced what is known as organic architecture , an architecture that evolves naturally out of the context, most importantly for him the relationship between the site and the building and the needs of the client. For example, houses in wooded regions made heavy use of wood, desert houses had rambling floor plans and heavy use of stone, and houses in rocky areas such as Los Angeles were built mainly of cinder block . Wright's creations took his concern with organic architecture down to the smallest details. From his largest commercial commissions to the relatively modest Usonian houses, Wright conceived virtually every detail of both the external design and the internal fixtures, including furniture , carpets , windows, doors, tables and chairs, light fittings and decorative elements. He was one of the first architects to design and supply custom- made, purpose-built furniture and fittings that functioned as integrated parts of the whole design, and he often returned to earlier commissions to redesign internal fittings. Some of the built-in furniture remains, while other restorations have included replacement pieces created using his plans. His Prairie houses use themed, coordinated design elements (often based on plant forms) that are repeated in windows, carpets and other fittings. He made innovative use of new building materials such as precast concrete blocks, glass bricks and zinc cames (instead of the traditional lead ) for his leadlight windows, and he famously used Pyrex glass tubing as a major element in the Johnson Wax Headquarters . Wright was also one of the first architects to design and install custom-made electric light fittings, including some of the very first electric floor lamps, and his very early use of the then-novel spherical glass lampshade (a design previously not possible due to the physical restrictions of gas lighting).