This decaying complex from the early 1900s was once the site of massive iron and fluorite mines.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

Peek into a cave of giant, glimmering crystals.

An enormous Soviet aircraft, the only one of its kind, stands at the deserted shore of the Caspian Sea.

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

"Di amigo y entra" at this Argentinian Middle Earth-inspired pub.

The best-preserved example of a unique structure in Nubian architecture.

A giant owl named Rocco oversees mythical woodland creatures along these charming mountain trails.

This weird, elephant-shaped rock also hosts two ancient tombs.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

A whimsical folk art environment where you can lose yourself in the many colors of joy, beauty, and creativity.

This enormous steel tube is the biggest speaking horn in the world.

Train cars and railroad artifacts abound at this restaurant devoted to railway history.

Professional and amateur dioramas, taxidermy, and oddities all located in an attic above a gallery.

This small, ingenious cannon once helped regulate Parisian life.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

This underground car park moonlights as a permanent art exhibition.

This 20-foot mountain is made up of some 15,000 mannequins—if you visit, you can even take a piece home with you.

An open-air "garden" of mural art that changes weekly.

This dynamic entertainment venue brings a much-needed funkiness to the region with its bizarre art, eclectic films screenings, and peculiar performance pieces.

Over 100 artworks are painted on the walls of this town, making it an open-air museum of contemporary art.

A unique, modernist church tower that appears to float above the ground.