Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

A Spanish town built into the cliffs.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

A landscape decorated with enormous skull sculptures.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Week-long block party becomes a competition for the best decorated street.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A beautiful but toxic fountain of mercury.

Mountain where Jesus was first tempted by the Devil.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

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

Wonderland replication in progress by one persistent man.

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

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

This cemetery features modernist statues as strange as its name.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

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

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The eclectic seaside sanctuary caters to a rather fowl crowd.