 Although Pruitt–Igoe was designed by Minoru Yamasaki with several innovative living features, the project ultimately was demolished in the 1970s.Although Cochran Gardens' management was turned over to a tenant association in 1976, it later returned to city control in the 1990s and was demolished in 2008 after several years of decay.In recent years, several organizations have attempted to promote preservation of historic structures of St. Louis.