Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

The "Prussian Versailles" that is as glorious today as when it was built.

Berlin's old airport.

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

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

Hamburgers are intensely proud of their tunnel beneath the river.

Fantastic views and thousands of love locks.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Legendary site where an evil bishop was devoured by rodents.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

This small condiment museum makes all manner of mustards with a 200-year-old mill.

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

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

An early 20th-century bullring converted into a modern shopping center.

Besides being home to cave paintings and pre-Columbian Cuban archaeological remains, you get to take a boat through this stalactite and stalagmite covered cave.

Neo-cave art on the macro scale.

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

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

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

Standing in this historic plaza is a statue representing one of Cuba's most iconic literary characters.

Single runway interrupted by a busy road that cuts across its middle.