It was built in 1798, and is a large two-story brick building in a late-Georgian / early-Federal style.

The roof is gently sloping and is topped by a large octagonal cupola and once had a wooden balustrade.

The building housed the Wilmington city government until 1916 and served as a focal point of many public events in Delaware's history.

[2] The property is owned and managed by the Delaware Historical Society It was added to the National Register of Historic Places in 1974.

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