The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

A medieval military street hidden beneath a charming French fishing village.

Avant garde house of Pierre Cardin on the Cote d’Azur.

This French anatomy museum greets guests with a skinless man, mid-shovel.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

An abandoned brutalist monument whose history has been lost to the ages.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

One man's desire to transcend art led to the construction of this outsider chapel.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Founded as a refugee camp, now a popular tourist spot.

Morocco's largest Jewish cemetery.

This sanctuary is home to donkeys who finally get to rest after a life of toil.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

A Spanish town built into the cliffs.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Holding the current title of "biggest chair in the world," it stands with little fanfare in Lucena, Spain.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

A complimentary beverage is offered to the bodega's resident rodents every day.