The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The final resting place of New Orleans' most famous voodoo priestess.

Try not to get slimed in Tribeca.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A celebration of Colombia’s premier contemporary artist.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

These subterranean models show Mexico City's central square during three different eras.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

This Roman arena once played host to bloody gladiatorial battles.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

Long tunnels run under the ancient chariot racing circuit to the tower.

This enormous censer uses a pulley system installed over 400 years ago.

This Arab fortress was once the largest citadel in Western Europe.

Five million people are laid to rest here, more than the population of Madrid itself.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A lush indoor jungle fills this bustling Madrid transportation hub.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Though the original building has been demolished, these massive bronze doors were saved.

A Romanesque sanctuary of calm amid the bustle of downtown Los Angeles.