The only castle in North America to ever house European sovereigns.

These pretty kitties killed and ate as many as 135 railway workers.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This striking art museum holds an amazing series of curiosity cabinets.

What was once a unique system of urban elevators is turning into a mechanical ruin.

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

A seemingly endless landscape of pure salt stretches far across Bolivia.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

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

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

The Uros people live on floating reed islands in lake Titicaca.

Stained glass windows bathe this botanical garden in cosmic light.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.