Museum in a swimming pool where the water still flows.

Translating as "The Jump of the Girlfriend," this stunning waterfall has a tragic legend behind it.

The ruins of a bombed medieval village memorialize the destruction of the Spanish Civil War.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

This ancient Spanish castle sits high upon a hilltop.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Village situated on a narrow volcanic escarpment.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Science fiction's grandfather has a fittingly marvelous tomb.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

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

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Recently restored menagerie of Victorian-era beasts.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

Towering basalt columns, a creation of fire and ice.

This amazingly preserved Doric temple was abandoned before it was ever completed.