A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

An abandoned town is hidden in Great Smoky Mountains National Park.

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

This bridge is so steep it looks like a rollercoaster.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

This record setting conveyor belt system can even be seen from space.

Once the central jail for Los Angeles, this building housed inmates like Al Capone, those arrested from the Zoot Suit and Watts Riots, and individuals imprisoned for their sexuality.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

The beehive-like buildings of this abandoned resort reside near the border of Mauritania and Senegal.

An abandoned bus station transformed into a museum dedicated to the history of Greyhound Lines, in the place where it all began.

A futuristic climate change study is nestled deep within this public land.

An extraordinary mechanical calculator designed by the mathematician and philosopher Gottfried Leibniz.

The world's oldest rose is so tough it survived being bombed in World War II.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

One man's swirling six-acre monument of stone.

A peaceful international sculpture garden in upstate New York.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

This restaurant proudly displays bread signed by the 39th president.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

This ancient amphitheater was restored in the early 1990s.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The only thing sweeter than the potatoes is the canine proprietor of this roadside stall.