Gigantic Romanian salt mines used to heal respiratory conditions.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

A popular European tradition makes its way to the states on one of America's most famous bridges.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A terrific purveyor of natural history objects and curios.

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

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

Now containing the bones of the actual conquistador, instead of someone else.

Mystic Incan rock piles three miles above sea level.

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

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

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

An unexpected desert oasis in South America.

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.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Death road of Bolivia.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.