These lesser-known Maltese catacombs date back over 1,700 years.

A centuries-old forgotten underworld lies beneath Malta.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

This subterranean necropolis holds three floors of antler-dug grave caves.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Folklore and history carved into Brittany's coast.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A naturally beautiful, seemingly bottomless deep blue spring.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

A small Portuguese cottage formed between boulders in the countryside.

The world's oldest bookshop still in operation.

This small chapel is built of human bones and decorated with a golden skeleton.

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

Houses are tucked between, on, and underneath giant boulders.

A snapshot of the city's fascinating voodoo culture.

A terrific purveyor of natural history objects and curios.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

One of the most important yet well-hidden museums dedicated to the history of medicine.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

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

Enjoy fresh-baked bread and fish from a repurposed Portuguese fortress.

North Africa's first museum of its kind preserves the culture of Moroccan women and their artistic achievements. 

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.