An impactful museum ensures notorious war crimes disguised as "medical experimentation" won't soon be forgotten.

Two flush headstones mark the only known graves to be embedded in an airport runway.

A unique museum dedicated to the Gullah-Geechee people, housed within an old oyster cannery.

This kitschy tavern is also home to rare early editions of "Treasure Island."

4,000 monkeys used for medical testing on an island off of South Carolina.

An old airplane engine forms an unusual cairn atop this Moroccan peak.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Where the English trapper who faked a First Nations identity bunked with beavers.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).

Get your gift of the gab on Route 66.

Come for the whole sides of slow-roasted lamb, stay for the regional Kurdish specialties.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

A ghostly mansion in the middle of downtown Tunis.

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

This futuristic building is yet another architectural wonder in Dubai.

A golden egg-shaped sauna in the Arctic tundra.

The largest single-building tribal cultural center in the U.S. is an expansive museum in Oklahoma City.

Picturesque intersection of witchcraft and ancient Christianity.