Abandoned bull fighting ring, slowly falling apart in Uruguay.

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

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.

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

Pivotal home of Nobel Prize winner Pablo Neruda.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The world's most remote airport.

The largest stone moai on Rapa Nui.

This large round boulder is said to emit spiritual power, but it may just be magnets.

Stalactites and stalagmites in a beautifully lit cave.

A Nesting Doll of Churches.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The mark of the Devil's horns on a marble column in Milan.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Pilgrimage site for star-crossed lovers.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

This zoological museum began as the first great curiosity cabinet.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.