Independence Hall is the Philadelphia building where the Declaration of Independence was adopted.
The building was completed in 1753 as the Pennsylvania State House. The Second Continental Congress met there during the American Revolution, and its delegates debated and approved the Declaration in 1776. The Constitutional Convention also met in the building in 1787 and produced the United States Constitution.
The name Independence Hall became common after the American Revolution; during the colonial period, the structure was generally called the Pennsylvania State House. Its Assembly Room contains the chair used by George Washington while he presided over the Constitutional Convention. Today, the building forms part of Independence National Historical Park and is a major site connected with the 1776 anniversary commemorated by America250.