This artificial cave looks like something out of a fairytale.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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

Walk through Czech history in Prague's largest graveyard.

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

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

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

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

This spooky statue sits outside a famous Prague theater.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Monks in the empyreal Alazani River valley have preserved their 1,000-year-old winemaking tradition.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

Small church on top of a huge rock column.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Unusual building appears to be haphazardly built from randomly piled bricks.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

You'll find just about anything in this funky Tbilisi flea market.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

Touching displays of wishes for peace from the Cold War era.

Light still pours into the ruins of this ancient Islamic observatory.