A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A quaint Russian village in the middle of a German metropolis.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A fascinating insight into daily life in the Eastern Bloc.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.