This star-shaped military outpost is now simply trying to protect itself from neglect.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

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

A small Portuguese cottage formed between boulders in the countryside.

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

Picturesque intersection of witchcraft and ancient Christianity.

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

The world's oldest bookshop still in operation.

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

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

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

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

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

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

A submerged village appears when dam levels drop.

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

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

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

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

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.