A plaque is all that remains of a lost Oxford transport hub.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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

The location of this small park was once the site of an infamous public morgue.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

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

Elaborate tile work in this railway station tells the story of Portugal.

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

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

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

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

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

An exquisite collection of fairytale conveyances that puts most car museums to shame.

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

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

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

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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

This little sun pays homage to a massive gate that once stood at this location.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.