This lab's maddening silence is good for business but bad for sanity.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

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

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

The celebrity luchadores of La Paz are tough ladies in traditional petticoats and braids.

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

A desert that evokes the surreal.

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

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

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

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

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

A collection of 1,300 accordions of all shapes and sizes displayed in chronological order.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

When it opened during the final years of the embargo, all the drinks and cigars were free.

A collection of old neon signs from all over Poland line a secluded courtyard.

The fully functional, submerged Vanuatu Post Office is definitely one of a kind.

Road signs in Namibia mark the location of one of the five major circles of latitude.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The remains of diamond fever taken over by the desert.