This bridge was constructed from the rubble of the infamous Bastille.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

These public toilets also provide entertainment for visitors to Amsterdam’s Red Light District.

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

Check the time in 145 countries at once with this East German relic.

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

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

Pilgrimage site for star-crossed lovers.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

Venice's "Island of the Mad."

Go inside to really appreciate this 500-year-old technological masterpiece.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

Giant topiary dog once played a role in a terrorist bomb plot.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

What appears to be an ancient Roman temple is actually a Catholic church.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.