Named for the DeFoe novel inspired by a stranded sailor, this island is known for its rare plants and extreme beauty.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

An enigmatic modern marker left next to a historic Roman site.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

A modern sliver of architecture in Roma.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A Nesting Doll of Churches.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

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

The oldest operating pharmacy in the world features 800-year-old recipes.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

This 16th-century monastery has been turned into a surrealist architecture compound.

Architectureal fantasy quarter of Rome.

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

The middle finger of modernity.

Renaissance villa and gardens complete with a tormented colossus.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.