6th and Chestnut Sts.
Congress Hall had its beginning as the Philadelphia County Courthouse, but was shortly thereafter converted to the meeting place of the United States Congress. During the time that Congress held session here both the Bill of Rights and the United States Constitution were ratified within the walls.
The National Park Service offers guided tours of the building throughout the year. Many of the rooms in the hall are maintained just as they were during early America, most notable being the Senate Chamber.