Early 20th century structures are more restrained, with decoration coming from the building's materials rather than being applied.

A few Art Deco and Streamline Moderne buildings dating from the 1920s to 1940s also appear in the district.

Notable contributing properties include the Princess Theatre, an Art Deco cinema-turned-theater, and the Cotaco Opera House, built in 1890.

The Decatur Light, Power, and Fuel Company complex was added to the district in 1999, but subsequently demolished.

This article about a property in Alabama on the National Register of Historic Places is a stub.