The Plaza Square Apartments Historic District, in St. Louis, Missouri, is a historic district which was listed on the National Register of Historic Places in 2007. The listing included eight contributing buildings on .
The district includes six 13-story Modern Movement apartment buildings and two historic churches. The apartment buildings were constructed during 1959 to 1961 "from plans by Hellmuth Obata & Kassabaum with Harris Armstrong." One of the churches has an office wing and/or a rectory?
One of the churches is Centenary Methodist Episcopal Church, South, which was already separately listed on the National Register.
Location: Bounded by 15th St., Olive St., 17th St. & Chestnut St. St. Louis, MO<br/> Date added: July 12, 2007<br/> Architect: Hellmuth, Obata & Kassabaum; et al.<br/> Architecture: Modern Movement, Late Victorian<br/> Historic function: Domestic; Education<br/> Historic subfunction: Multiple Dwelling; School<br/> Criteria: event, architecture/engineering