Congress Hall

Congress Hall, located in Philadelphia at the intersection of Chestnut and 6th Streets, served as the seat of the United States Congress from December 6, 1790, to May 14, 1800. During Congress Hall's duration as the capitol of the United States, the country admitted three new states, Vermont, Kentucky, and Tennessee; ratified the Bill of Rights of the United States Constitution; and oversaw the presidential inaugurations of both George Washington and John Adams.

Congress Hall was restored in the 20th century to its original appearance in 1796. The building is now managed by the National Park Service within the Independence National Historical Park and is open for public tours. Congress Hall is conjoined with Independence Hall, which is adjacent to the east.

Source: Wikipedia