Scattered around Atlanta are little doors with big charm.

305 homemade stone stairs wind their way up the Hamilton escarpment.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

A mysterious spirit totem at the edge of Navajo lands.

This modern labyrinth lies in the shadow of a ruined medieval castle.

Only known mainland rookery of the threatened Stellar sea lion.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

An enigmatic modern marker left next to a historic Roman site.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

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

These fantastically named natural pools look like something out of a Scottish myth.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A bizarre house filled with an astounding array of collections.

A collection of full-size movie monsters opened to the public.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Medical and zoological curiosities for sale.

A giant Troll lurks under one of Seattle's oldest bridges.

A brewery warehouse which doubles as a circus bigtop.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The site of the climactic scene from the classic horror film is now a historic landmark.