The 1787 Constitutional Convention met in Independence Hall.
Located in Philadelphia, Pennsylvania, the building was completed in 1753 as the Pennsylvania State House. The Second Continental Congress used it when it adopted the Declaration of Independence in 1776, and the Constitutional Convention met there in 1787.
Delegates debated the structure of the new federal government behind closed doors. Their work produced the U.S. Constitution, which was signed on September 17, 1787. The building therefore connects two major episodes remembered during the America250 period: independence and constitutional formation.
Independence Hall was originally called the Pennsylvania State House. The name “Independence Hall” became common later, reflecting the building’s association with the Declaration. The site is now part of Independence National Historical Park and is recognized as a UNESCO World Heritage Site.