Old Statehouse is a historic state capitol building located on The Green at Dover, Kent County, Delaware.

The State House underwent a complete reconstruction between 1787 and 1792, incorporating the hard brick and other reusable materials from its predecessor, a courthouse built in 1722.

Except for unfortunate changes in 1873-1875, which substituted a mansard roof and bricked in most of the Palladian window, exterior alterations to the State House have been in the form of attached wings, added between 1836 and 1926.

In 1968-1969 the rotunda was removed, leaving an inconspicuous single-story recessed structure between the original Old State House and the remodeled former south wing, now a separate Supreme Court Building.

A four-lane street, widened for extra parking in front of the State House, separates the tree-shaded grass plot from the buildings, nearly all of which open directly on the sidewalk.

To the east of The Green, adjacent to the newer rear additions to the State House, is a large open space laid out circa 1930.

About it are centered additional small and medium sized State buildings erected in and after 1932 but of Georgian design to harmonize with the original structure.

[2] The Capitol Buildings Complex in Delaware comprises several important units, but none are as architecturally and historically significant as the Old State House.