This legendary city has been a tourist attraction for centuries.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

The hallucinogenic center of the ancient world.

A spectacular cave and a beguiling lake.

At this exhibit on the world of poison, venomous animals steal the show.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

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

A kindergarten shaped like a cat with a tail that's a slide.

The world's biggest pet store.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

An industrial relic is now one of Europe's most staggering art spaces.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

A restaurant and observation deck built in a unique broadcasting antenna.

This former steel and coal plant is now a neon-lit industrial fantasia.

It's always summer at the beach inside this former airship hangar.

An elevator into the Baltic Sea.

A stairway to heaven, or to nowhere at all.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

This "floating railway" is one of the world's oldest monorail systems.

"The most colorful grottoes of the world.

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