A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

One of downtown Berlin's last reminders of its Communist past.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The smallest port in France is named after the pirate who created it.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This ancient theater was once the home of fierce gladiatorial battles.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

France's most famous cemetery, with some of its most curious tombs.

A little sculpture with a large wardrobe.

An abstract monument to a symphonic composer.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This small fort played a huge role defending Puerto Rico’s capital city.

Singapore's landscaping project is home to 18 incredible Supertrees.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

This sprawling scenic burial ground is the final resting place of Japan's last shogun.