From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Hans Christian Andersen for the postmodern world.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

This chimerical bridge/tunnel appears to dead end right into the sea.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Copenhagen's celebrated theme park and gardens.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

Czech architects borrow from the nest design of the stork to revitalize a farmstead, hoping to inspire the same loyalty the birds had shown.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This spooky statue sits outside a famous Prague theater.

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A mocking tribute to the past and modern leadership of Prague.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

The only quarter of the Old City not dedicated to a major world religion.

An iconic view point of the Sea of Galilee offers a look into Israel's past.