Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

A small town celebrates its cash crop with a giant highway sculpture.

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

A replica of the ice houses that once formed the basis of a local ice cream industry sits proudly in the middle of traffic.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

The King is honored by an elaborate grotto on a continent he never visited.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

Notorious artist squat renovated into legal studios.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A landscape decorated with enormous skull sculptures.

An archeological treasure trove stumbled upon by a couple of children.

Eccentric sculpture garden brings Basque mythology to life.

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

A beautiful but toxic fountain of mercury.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

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

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

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

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.