Located in the state capital city of Dover on Legislative Avenue, it houses the chambers and offices of the Delaware General Assembly.

From 1965 to 1970, flanking north and south wings were added on the sides of the building, giving each member of the Assembly an office in addition to a desk in one of the legislative chambers.

Two more wings, providing more office space for legislators and staff as well as hearing and caucus rooms, were added to the east side / rear of the building in 1994.

In addition, the entire interior of Legislative Hall was renovated in a three-phase project during the next three years during the summers of 1995, 1996 and 1997, including refurbishment of both the House and Senate chambers as well as the lobby, cafeteria, and many offices.

The building also houses other portraits, including of political and military figures such as James Frank Allee, James A. Bayard the elder, Bradford B. Barnes, James A. Bayard Jr., Henry Clay Conrad, Richard S. Cordrey, Samuel Francis Du Pont, Vera Gilbride Davis, J. Allen Frear, Jr., Herman Holloway Sr., Calvin R. McCullough, Eli Saulsbury, John Wales, John Jay Williams, Presley Spruance, Willard Saulsbury, Sr., and Willard Saulsbury, Jr.