The building known today as the "Old Court House" was built in sections during three centuries of colonial and federal government. Prior to the Revolution it served as the meeting house for the governments of the three counties comprising Delaware. For one year (1776–1777) it served as the state house of Delaware. Thence it became the New Castle County courthouse for three centuries. An occasional court held there serves to keep alive the claim that this building is the oldest continuously used chamber of justice in the United States.