The Fairmount–Southside Historic District is a 340-acre historic district that has been listed on the National Register of Historic Places since 1990. The district is roughly rectangular in shape. Structures in the district represent Late 19th and Early 20th Century American Movements architecture, Late 19th and 20th Century Revivals architecture, and Late Victorian archi…The Fairmount–Southside Historic District is a 340-acre historic district that has been listed on the National Register of Historic Places since 1990. The district is roughly rectangular in shape. Structures in the district represent Late 19th and Early 20th Century American Movements architecture, Late 19th and 20th Century Revivals architecture, and Late Victorian architecture.