Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

A small Portuguese cottage formed between boulders in the countryside.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

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

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

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

Perhaps the most spectacular grotto along the Algarve coastline.

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

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

The stunning interior of this Gothic church is covered in ornate gold details.

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

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.