A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

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

A larger-than-life statue of America's favorite sundae marks the place it was invented.

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

This semi-spooky remnant of an abandoned hotel provides fantastic views.

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

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

One of Philadelphia's largest murals resides hidden under this bridge.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

A piece of crumbling highway infrastructure was repurposed as a high-tech facility for testing racecars.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

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

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 remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

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

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

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.