The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Largest Roman Catholic church in North America.

There’s a hidden military meme engraved on the World War II Memorial.

A derelict bit of transportation infrastructure hidden in the woods.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

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 fire inside this temple has burned for more than 1,500 years.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

This fortified sand barrier dividing a contested territory is the longest minefield in the world.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Salute the leader of the proletariat.

Unrepaired walls from a 1920 anarchist bomb attack.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Cryptic messages embedded in the New York City sidewalk.

A terrific purveyor of natural history objects and curios.

A Bronze Age stone ship said to be the grave of the mythical founder of Gotland.

Nikola Tesla's former home contains an homage hidden from plain sight.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.