This cover from USA depicts 2 stamps (on the right corner), celebrating the
Independence Hall in Pennsylvania.
Independence Hall is a historic civic building in Philadelphia, where both the United States Declaration of Independence and the United States Constitution were debated and adopted by America's Founding Fathers. The structure forms the centerpiece of the Independence National Historical Park. Independence Hall was named to the National Register of Historic Places in 1966 and as a World Heritage Site in 1979. The building was completed in 1753 as the Pennsylvania State House. It served as the first capital of both the United States and of the Province and later the Commonwealth of Pennsylvania. It was the principal meeting place of the Second Continental Congress from 1775 to 1781, and was the site of the Constitutional Convention, at which the U.S. Constitution, the longest-standing written and codified national constitution in the world, was ratified on June 21, 1788.
