This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Treehouse motel and treehouse-building school.

A hotel and restaurant serving as the mecca of kitsch.

A former utopian healing center created by a huckster and built by derelicts.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This natural gas vent certainly earns its name as the smallest volcano in Italy.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

The astonishing collection of an infamous criminologist.

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

A fake medieval village in the middle of Turin.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Odd outsider art installations surround a Gold Rush-era ghost town.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

There's nothing creepier than a cemetery next to a clown motel.