A gorgeous example of 13th-century Gothic architecture.

Pilgrimage site for star-crossed lovers.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Ernest Hemingway was the first to sign this colorful wall covered in thousands of celebrity signatures.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

This mountain trail inspired Nietzsche to complete his magnum opus.

A place to see how French aristocrats lived in the early 1900s.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This castle has links to Portugal’s founding and struggles for independence.

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

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Perhaps the most spectacular grotto along the Algarve coastline.

A garden in Lisbon filled with giant porcelain creatures.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

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

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

The world's oldest bookshop still in operation.

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

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.

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

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