This ancient abbey now lies in majestic ruin behind a caravan park.

These precariously placed ruins harken back to a 13th-century castle.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A submerged village appears when dam levels drop.

This chapel is the site of a yearly pilgrimage that originated during the Middle Ages.

This tiny chapel atop a sea stack is dedicated to the patron saint of Ponza, Saint Silverius.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

Artist's eccentric property excessively decorated with found objects and work of his own.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This mosque was based on Sub-Saharan Islamic architecture and created for the Senegalese Tirailleurs.

This former church is believed to be one of the first Christian sites in Belfast Lough.

A temple belonging to the largest Buddhist order in South Korea nestled in the middle of New York City.

This Orthodox Church's exterior is rather unorthodox.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

Whimsical sculptures and caves chiseled by nature over the millennia.

This mysterious hilltop collection of Druid carvings isn't quite what it seems.

A meditative space out of a fantasy story.

Approximately 300 million years ago, a massive coral reef existed in what is now the largest limestone cave in Japan.

This ancient burial site was once thought to be the home of a race distinctive to Ainu folklore.