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

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

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.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

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

This house's itty bitty size means no humans allowed.

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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

Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

Mountain where Jesus was first tempted by the Devil.

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

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

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.

A massive sustainable farm designed by the mastermind behind Central Park.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

This ancient tomb in the West Bank is a holy site for Jews, Muslims, and Christians alike.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

The only quarter of the Old City not dedicated to a major world religion.