Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

The highest tropical mountain range in the world is in Central Peru, home to a vast array of exotic and quirky plants and animals.

The Uros people live on floating reed islands in lake Titicaca.

An unexpected desert oasis in South America.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The oldest continuously occupied public building in the United States.

"X" marks the spot of an echo chamber in the middle of a plaza.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A battle between nature and architecture in the Cambodian jungle.

The world's longest known cave system.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A little sculpture with a large wardrobe.

The celebrated eyesore created by starry-eyed sweethearts.

Walk the whole Mississippi River!

One of corporate America's best-kept secrets is also one of the most publicly displayed.