Each of these hand-painted wooden boxes, which date to between the 16th and 19th centuries, contains a genuine human skull.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

This small oxbow lake has rare giant river otters and some Seussian-sounding birds.

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

The remains of what was the most important religious complex in coastal Peru for over a millennium.

The world's largest clay lick, where parrots gather to snack.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Huge stone depressions which may have acted as an Incan agricultural experiment.

An unexpected desert oasis in South America.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

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

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

This public elevator links the lower city to the upper city of Salvador.

What killed this humpback whale is a mystery, but its remains have become legendary.

A magical oasis in the middle of the Negev Desert.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Legend says one of the world's largest marine geysers is actually a whale that got wedged within the rocks.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.