Naturally protected city carved from a rock face.

A subterranean Holocaust refuge within one of the world's longest cave systems.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

This centuries-old pueblo church houses the body of a Franciscan friar who is said to be a rare "incorruptible" corpse.

Lucha Libre (Mexican Wrestling) themed taco shop.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

"May prick nor purse ne'er fail you."

Protecting the dead from opportunistic body snatchers.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

Beneath the city of Lourdes, France is a massive, concrete church.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

A living art gallery painted on a canvas of Monterey pine trees.

A small church ornamented with medieval erotic sculptures.