The former home and studio of Belgian artist Antoine Wiertz is now a museum dedicated to his work.

Cozy basement bar sports an inventory of over 2,000 beers.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A Jenga-style cylindrical tower of books that appears to go on forever.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

The king of U.S. high points towers over every other peak on the continent.

Four-story concrete hotel never opened to customers.

Countless grotesque faces stare out from this eerie Prague art wall.