These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Follow the original medieval paths that wind through this intriguing section of the city.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

Celebrating the works of a beloved Italian actor, known for such cult films as 'They Call Me Trinity' and 'Watch Out, We’re Mad!'

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

This giant statue of a vulva became internationally famous after an American exchange student got stuck in it.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

It's good luck to be mocked by this monkey.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Tiny memorials honor individual victims of the Holocaust.

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

The prototype for all Nazi concentration camps.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

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

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

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

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

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.