The Winslow House is a Frank Lloyd Wright-designed house located at 515 Auvergne Place in River Forest, Illinois. A landmark building in Wright’s career, the Winslow house, built in 1893-94, was his first major commission as an independent architect. While the design owes a tremendous debt to the earlier James Charnley House, Wright always considered the Winslow house extremely important to his career. Looking back on it in 1936, he described it as "the first 'prairie house’.” (wikipedia.org)