Market Square is a shopping center located in Lake Forest, Illinois, United States, in the Chicago metropolitan area. Opened in 1916, it is notable as one of the earliest planned shopping centers, and is often cited as the first planned shopping center in the United States.
Although Country Club Plaza (1923) in Kansas City, Missouri is generally credited as the first regional shopping center designed to accommodate shoppers arriving by automobile, Market Square was built within an already defined central retail district, replacing prior development. Lake Forest resident Arthur T. Aldis championed the notion of replacing the dilapidated business district of the town, and engaged architect Howard Van Doren Shaw.
In Illinois, the first major center to be developed after Market Square was Spanish Court (1928).