The bookstore with bookshelves built into unlikely places.

The crypts are so large they're basically their own underground church.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

This tiny watering hole claims to have the smallest bar counter in Europe.

One of the city’s oldest watering holes was originally the home of a famous James Brown (not that one).

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

Theme park featuring miniature replicas of European monuments.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Two stunning 17th-century libraries and a cabinet of curiosities.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

Microscopic scenes; some call it novelty, some call it art.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

The first museum in the world devoted to sexual gadgetry.

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

Walk through Czech history in Prague's largest graveyard.

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

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

This small museum in a 17th-century building honors three iconic Scottish writers.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.