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

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created with the discharge from a geothermal energy plant.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Pop culture has helped to keep this iconic British building from being destroyed.

Fascinating town where normal life interfaces with the occult.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A fantastic castle rumored to be the birthplace of King Arthur.

This tangled English forest looks like something right out of a fairytale.

Catacombs turned marketplace.

Famously misunderstood wonder of the ancient world

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

The "Little Ones," show Portugal in full miniature splendor.

One man's remarkable private collection of art from around the world.

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

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

As the highest point in the Mid-Atlantic range this stratovolcano offers spectacular views.

Pagan monument converted to Christianity with the population.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.