The Helena Museum of Phillips County is a historic building at 623 Pecan Street in Helena, Arkansas. The main portion of the building is a 2+1⁄2-story mansard-roofed Second Empire structure, and was built in 1891 with funds raised by the Women's Library Association. It is Helena's oldest civic building, and was used not just to house the library, but also as a social venue until about 1914, when its main space was fully devoted to the library. In 1929 a 1+1⁄2-story wing was added to rear to serve as a space for museum exhibits on local history.