Locals call this magical moss-covered walkway the "Emerald Path."

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

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

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

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

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

Mysterious rocks that ring musically when struck.

A toxic ghost town sitting atop a massive coal fire.

On the second floor of a small town library is an homage to angling and memorial to a great local fisherman.

An allegedly haunted testament to a local businessman's desire for status, posterity, and charity.

One patriotic farmer's ode to the 9/11 tragedy remains even after the farm changed hands.

A quaint village in Western New York named after Alexander Hamilton's beloved sister-in-law.

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

In the mid-19th century, an eight-sided house was the latest fad.

At this small shop off a dirt road in the forest, the specialty is eel the owner caught and smoked himself.

What remains of the simple red brick chapel where the women's rights movement began.

The summit Roosevelt conquered before he descended to become The Chief.

A fictional town that was briefly brought to life before fading once again out of existence.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

A gigantic 10-foot tall stone man.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.