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

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.

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

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

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

Go inside to really appreciate this 500-year-old technological masterpiece.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Water and windows define this defensive Italian well.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

A fake medieval village in the middle of Turin.