What is the most famous American historical site?

The most famous American historical site is the Independence Hall in Philadelphia, Pennsylvania. This historic building is where the Second Continental Congress met in 1776 and where the Declaration of Independence was signed. It is also the site where the U.S. Constitution was debated and adopted in 1787. Independence Hall is a symbol of the birth of American democracy and is part of the Independence National Historical Park. The site attracts millions of visitors each year who come to learn about the founding of the United States and its significance in world history.