A historic observatory precariously perched at the "Top of Europe."

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

An electrical pylon under whose legs a normal gauge train can run.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

A varied collection of brains in alcohol.

This old wooden funicular railway leads to a cemetery in the forest.

An old slaughterhouse now holds the largest collection of pig artifacts.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Twisted buildings adorn the banks of the Rhine river.

Go surfing on this urban wave, "hacked" by local surfers.

This lurid German fountain plots the sad course of marriage from dating to death.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

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

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

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

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

The prototype for all Nazi concentration camps.

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

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

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

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

The fairy tale castle of the "fairy-tale king."

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.