The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This Central New York ghost town was once a prosperous railroad community.

An abandoned castle owned and ignored by Masons carries a cursed history.

This small Catskills village has six independent bookstores and more bookshops than restaurants.

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

This Catskills museum preserves stumps from the earliest known fossil forest on Earth.

Despite not growing anywhere near New York City, bananas are ripened in a pressurized room in the Bronx using precise banana science.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Whimsical artist house in the New Jersey woods.

A winding, cliffside stretch of road overlooking the Delaware River.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

Ancient Greek oracle of the dead.

Monasteries on rock pillars, once accessible only by frayed ropes.

The hallucinogenic center of the ancient world.

A spectacular cave and a beguiling lake.

Stalactites and stalagmites in a beautifully lit cave.

Mysterious rocks that ring musically when struck.

The world's second-largest excavated hole.