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

A small Portuguese cottage formed between boulders in the countryside.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

A garden in Lisbon filled with giant porcelain creatures.

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

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

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

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

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

A submerged village appears when dam levels drop.

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

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

The world's oldest bookshop still in operation.

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

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

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.

Some 4,000 individual tiles make up this striking blue billboard from the golden age of air travel.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

Panoramic views from the mountains over a facility built to provide tuberculosis patients with fresh mountain air.