The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

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

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

Alexander Hamilton’s creation caused quite a bit of controversy.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

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

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

No one knows who painted this mysterious mural in a Penn State basement.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

The oldest candy store in the world has been selling traditional sweets since 1827.

This award-winning men's bathroom was just too beautiful to not allow women to see.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

This stone throne invites adventurers to observe breathtaking views of the Peak District.

Robots, lasers, and whoopee cushions, oh my!

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.