America turns 250 only once. And there is only one place to be when it happens — Philadelphia. This is the street where the Declaration of Independence was signed. The hall where the Constitution was written. The bell that rang when it all began. On this private 2-hour walk through the heart of Old City, you won't just see these places — you'll stand in them, in the exact year the nation marks its 250th birthday. From the Betsy Ross House where the first flag was sewn, to Independence Hall where it all became official, every step of this tour is a step through 250 years of American history. This is not a regular tour. This is a once-in-250-years experience.