An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

Tell this pair of "love-inviting" cats in Ginza your romantic hopes.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

A lonely beacon, precariously perched atop a remote sliver of rock.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

This century-old cinema is complete with musical interludes and boasts a rare projection system.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

Double spiral staircases are not unheard of, but they are very rare.

This "cursed house" features secret rooms, hidden vaults, and dark escape tunnels.

This fresco inside a Serbian cave church has been a source of disagreement.

Stocking up on the world's best beer requires a pilgrimage to a monastery drive-through.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This 18th-century former mosque held the first Hellenic Parliament.

The Route 66 institution that inspired Taco Bell also served as an important headquarters for Mexican-American social movements.

This ancient sword lay in a waterlogged tomb for 2,500 years, but managed to remain relatively untarnished and impressively sharp.

Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.