Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A beautiful oddities shop crammed with strange and morbid curiosities.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.