Secrets of Philadelphia's History and Art

Philadelphia has a secret system of underground tunnels connecting City Hall to nearby buildings

that most people have no idea exists. These tunnels were built in the early 1900s and are still

used today by city officials. But here's what blows my mind. There's a massive

statue of William Penn on top of City Hall that held a gentleman's agreement for decades.

No building in Philly was allowed to be taller than his hat. This unofficial

rule kept the skyline respectful until 1987 when One Liberty Place broke it. Locals say that's

when the city's sports curse began. The Phillies, Eagles, Flyers,

and Sixers didn't win a major championship for 21 years after that. And get this.