A public urinal so pretty, it was declared a national monument.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

In a small town outside Jerusalem, a roadside diner is devoted to all things Elvis Presley.

This small group of sand dunes manages to pack in a strange rainbow of colors.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

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

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

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

Pilgrimage site for star-crossed lovers.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

Abandoned village in Sicily built during the agricultural reforms of Mussolini.

There's an exclusive Beefeaters pub hidden in the Tower of London.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.