Independence Hall hosted the 1787 signing of the U.S. Constitution.
The building in Philadelphia was known in the colonial period as the Pennsylvania State House. Delegates to the Constitutional Convention met there from May through September 1787 and signed the Constitution in its Assembly Room on September 17. The building was later named Independence Hall because of its association with the Declaration of Independence.
Independence Hall is unusually important in American history because both documents were connected with the site. The Second Continental Congress adopted the Declaration of Independence there in 1776, and the Constitutional Convention approved the Constitution there in 1787. The building is part of Independence National Historical Park and is designated a UNESCO World Heritage Site.
Federal Hall in New York City is a common mix-up: it hosted the first inauguration of George Washington as president in 1789. Carpenters’ Hall hosted the First Continental Congress in 1774, while Faneuil Hall is a separate historic meeting place in Boston.