This historic stone bridge has an entire neighborhood clinging to its sides.

A small but immensely extravagant palace built by the "Night King."

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

A stairway to heaven, or to nowhere at all.

An intricate and amazing house built by architect Karl Junker.

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

"The most colorful grottoes of the world.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

When the rain falls, this drain system turns into a musical instrument.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A striking 12th-century-style castle built on the edge of a cliff.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Ruins of a German Castle on top of a towering stone pillar.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This classic restaurant features a gorgeous mirror-clad room.

Started as a kitchen garden, now the second largest botanical garden in the world.

An eerie, derelict amusement park in Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.