People escaping slavery may have hidden inside a corpse vault.

A derelict bit of transportation infrastructure hidden in the woods.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The site of the climactic scene from the classic horror film is now a historic landmark.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The world’s most primitive form of bungee jumping.

Nestled in the jungles of Vanuatu are the remains of what was once a cannibal oven.

Plains of ash and pair of semi-active volcanoes contribute to the otherworldly beauty of this little-known Vanuatu island.

The U.S. military dumped millions dollars worth of goods off a beach in Vanuatu, purely to spite the British and French.

This South Pacific volcano has been blowing its stack for over 800 years and is said to be home to a cult leader waiting to be reborn.

The fully functional, submerged Vanuatu Post Office is definitely one of a kind.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

Known as one of the most famous parks in Honduras.

This fortress in Honduras was built to resist pirates, but its builders had more to fear from the British.

Fish raining from the sky are the cause of a yearly celebration in this small Honduran town.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

Remote Honduran Islands with a colorful history.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

The warmest cave in the Ozarks features two seemingly bottomless lakes.

There are no bodies inside these stone coffins. And there never were.

These waterfalls can be twins or triplets, depending on how much it's rained recently.

This restaurant serves wood-fired fare served in a natural cave with a live spring.