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

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

Thousands of miniature bronze sculptures have taken over this city square creating a unique art installation.

An artist's mausoleum with a haunting echo.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

A collection of collections ranging from dentistry to minerals.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

Museum design and public transportation meet in this unique Russian train car.

Back in the tiny USSR.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

The world's largest model of our planetary system.

This Stockholm light tower can be controlled by anyone with a smartphone.

It houses the remains of a 17th-century version of the Titanic.