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

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

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

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

Pennsylvanian mass grave and possibly mass murder.

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

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

The Home and murder site of the witch of Rehmeyers Hollow.

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

A historic covered bridge is but one example of an oddly prevalent American urban legend.

The Old Man of the Mountain’s less-famous, but still beloved little brother is said to resemble a leader of the Abenaki tribe.

A mere dot on the map in the great north woods is the first place in America to vote in Presidential elections.

The oldest covered railroad bridge still standing in the United States.

Rock face that shares a name with Mary Shelley's famous doctor.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Beautiful natural falls where Satan once ruined a pot of beans.

America's oldest archaeological site or a muddled case of wishful thinking.

Even Henry David Thoreau found this glacial pothole irresistible.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

A quaint amusement park now sits, rusting and forgotten among the foliage.