See what remains of a once grand ancient Roman circus.

A plaque on the base of this statue holds a bewitching design.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

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

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

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

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

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

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

This lucky bronze frog was gifted to Madrid by a casino.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This abandoned viewing platform has become a monument to unnecessary government spending.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.