This strange mural located in the Ueno station is filled with traditional Japanese symbolism.

Mythical beasts symbolizing the city of Tokyo guard a historic bridge.

If you forgot something to read during your trip to Tokyo, this hostel has you covered.

Large miniature theme park with 100-plus models.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

Where commuters walk through remnants of an ancient Greek necropolis.

The ruined doorway is a portal to the building's turbulent and torturous past.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

The final resting place of one of Germany's most accomplished Renaissance men.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

The history of radiation is on safe display at the foot of a radiation science laboratory.

France's national museum of scientific and industrial instruments.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.