An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A toxic ghost town sitting atop a massive coal fire.

A network of concealed passageways lies within a busy London Underground station.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Northern Ireland's Brobdingnagian stepping stones.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A small house sits between two huge rocks, with its back to the sea.

What is it about mushrooms that makes people wish they lived inside of them?

A suspended garden, now gone, once hung in the middle of this abandoned church.

Where beautiful signs live on forever.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

A self-built castle made by a mysterious man.

America's oldest Italian restaurant is a San Francisco institution.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

An eerie smiling woman looms above the granite tombstones.