The corpse bride of Portugal.

One of the largest Roman settlements in Portugal.

This crumbling Portuguese ruin overlooks the populace it once ruled.

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

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

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

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

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

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

Picturesque intersection of witchcraft and ancient Christianity.

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

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

The world's oldest bookshop still in operation.

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

A submerged village appears when dam levels drop.

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

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

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

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

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

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

This beautiful train graveyard is one of the largest collections of steam locomotives in the Mediterranean and Europe.

A sixth-century Byzantine cistern hidden below a modern carpet store.

This mysterious cliffside carving of an ancient Hittite deity has baffled scholars for centuries.