An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A dead saint, a deadly poison, and a mysterious holy ooze.

The sunlight passing through the opening of this huge cave system creates a magical effect.

Southern Italy's spinning top village.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Explore a remarkable 35-hectare sculpture garden located an hour outside of Lisbon.

An intricate network of underground tombs carved into volcanic rock.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

After the owner of this Art Nouveau home died, it was turned into a museum displaying a lifetime dedicated to art.

The best place in the world to buy tinned fish.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

A garden in Lisbon filled with giant porcelain creatures.

A unique seaside cave where Aleister Crowley faked his own death.

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

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This charming candle shop has been in business since 1789.

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

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