Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

These enlarged egg sculptures represent the native birds of eastern Iceland.

This beautiful, historic church looks like something out of a simpler past.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

The summer tourists on these cliffs are thousands of seabirds.

This stunning concert hall has become a symbol of Iceland's national recovery.

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

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

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

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.