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.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A monument to the conquistador became increasingly controversial in the very city that he founded.

The retired vessel is South America's first floating museum.

The elaborate crypt where Peruvian heroes of the War of the Pacific were laid to rest.

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

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

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.

A market for witches is hidden within a train station.

Spain's largest bullring offers a unique glimpse at architecture and history.

A 16th-century Andalusian palace.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

This historic church houses the grave of a Scottish soldier who fought in the Battle of Waterloo.

These eerie outliers of the lightning bug family glow a mysterious blue color.

This chicken coop pays homage to a classic architectural style made famous throughout the southern United States.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.