The final resting place of the poets Shelley and Keats.

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

The underground sanctuary of a mysterious ancient cult.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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

Surreal riveted sea forts once protected the Kent shores from German attack.

Panorama exhibition hall in old silent theater with a beautiful backyard garden.

This rusting remnant of the local herring industry is being given a second life.

Extraordinary sculpture garden created by an eccentric English poet.

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Two stunning 17th-century libraries and a cabinet of curiosities.

Go through the looking glass in Tokyo's Wonderland-themed shop.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

No one is quite sure of the origins of these idyllic natural hot springs at an abandoned mountain resort.

The control tower at the historic weapons range is now available as a highly unusual vacation rental.

This cobblestoned medieval-style town was entirely constructed in the 1990s and 2000s.

This Manchester laundromat is hiding something.