A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

An ancient knight and a symbol of the city's freedom.

Longest fortress system anywhere in Europe.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

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

A Christian monastery stands on what was once a holy Incan temple.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

The sophisticated hydraulic system of the Nazca civilization.

An Inca spa, military outpost or maybe… both?

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

These overlooked ruins give an intimate look at the Inca Empire's urban planning prowess.

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

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

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

This stone complex marks the urban center of a lost civilization.

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

Death rituals and sacrifice inside a Peruvian megalith.

Sleep in a glass pod dangling off a cliff.

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

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

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.