FEATURE image: 562 Keystone Avenue, River Forest, Illinois, is a house designed by Frank Lloyd Wright in 1909. It is an excellent example of Wright’s mature Prairie style including its original Prairie-style glass. River Forest, Illinois is a suburb of Chicago in Cook County. River Forest is perhaps best known for its diversity of 19th and … Continue reading My Architecture & Design Photography: RIVER FOREST, Illinois. (21 Photos & Illustrations).