The Constitutional Convention signed the United States Constitution in Independence Hall in Philadelphia.
The building was completed in 1753 as the Pennsylvania State House. It housed Pennsylvania’s colonial legislature and later became the meeting place of the Second Continental Congress, which adopted the Declaration of Independence in 1776.
Delegates met there for the Constitutional Convention from May through September 1787. George Washington presided over the discussions, which produced a new federal framework to replace the Articles of Confederation. On September 17, 1787, 39 delegates signed the final document in the building’s Assembly Room.
The name Independence Hall became common in the nineteenth century, reflecting the building’s association with the Declaration as well as the Constitution. It is part of Independence National Historical Park and is recognized as a major site in the history of the United States. Carpenters’ Hall, another nearby Philadelphia building, hosted the First Continental Congress in 1774.