The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A lookout spot for the Andean condor, at the edges of one of the deepest canyons in the world.

An outdoor gallery of sculptures chiseled from a unique stone.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

The sophisticated hydraulic system of the Nazca civilization.

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

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.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

An unexpected desert oasis in South America.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

The large collection of pre-Columbian pottery might make you blush.

The king of U.S. high points towers over every other peak on the continent.

A historic area for shopping and dining in Ketchikan's former red-light district.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Often mistaken for an office building, inside this venue is an amazing collection of Native Alaskan art.

To find the "unicorns of the deep" you've got to go downstairs.

The palatial McDonald's that inspired Wesley Willis.

Illegal drag racing two stories beneath Chicago’s streets.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

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

San Francisco's newly reopened hands-on science museum.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.