Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Ain't no party like a ghost town party.

Crumbling necropolis set high above Fez.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

The world's largest reflecting pool is just two centimeters deep.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The celebrated eyesore created by starry-eyed sweethearts.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Cathedral carved out of salt, located a mile below the Earth's surface.

Storied crypts fill the most famous cemetery in Colombia.