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

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

This jail which was in service for over a century is now open for curious visitors.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

The abandoned coal loading dock is a canvas for unsanctioned art.

It would take 35 firetrucks to fill this enormous glacial pothole.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

An outlandish shoe shaped house built by an eccentric millionaire.

This public space is speckled with the eerie remnants of a defunct amusement park.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

There aren't too many operational funiculars around, but Pittsburgh has two!

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

The ruined remains of a coal mining ghost town are hidden within the woods.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

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

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

The oldest surviving botanic garden in the United States.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.