Once part of a complex of buildings, the Slave Mart building is the only structure to remain. When it was first constructed in 1859, the open ended building was referred to as a shed, and used the walls of the German Fire Hall to its west to support the roof timbers. Slave auctions were held inside. The interior was one large room with a 20-foot ceiling, while the front facade was more impressive with its high arch, octagonal pillars and a large iron gate. In 1938, the property was purchased by Miriam B. Wilson, who turned the site into a museum of African American history, arts and crafts.