Originally a Woolworth's Department Store (1940), the building has been transformed into the Delaware History Museum and the Jane and Littleton Mitchell Center for African American Heritage. It features permanent and rotating exhibitions, classrooms, and meeting space. Group tours and School programming available. Doing research? Visit the Research Library, across the street from the museum that collects and preserves Delaware materials dating back 135 years. The Society has a rich and varied collection of books, ephemera, newspapers, serials, maps, manuscripts and photographs relating to the history of Delaware and its people. Old Town Hall - Built in 1798-1800, Old Town Hall functioned as a center of political and social activities in Wilmington's mercantile-milling economy. Today it is owned by the Delaware Historical Society and is used for exhibitions and special events. Willingtown Square consists of six historic houses relocated into an urban park in 1976. Now used as administrative offices, it also houses the Willingtown Square Gallery, which highlights changing exhibits focusing on the Society's smaller collections.