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

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

A plaque in Madrid’s West Park marks the launch of a queer icon’s unlikely media career.

Five million people are laid to rest here, more than the population of Madrid itself.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

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

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

The earliest known map to show America, discovered by accident at a Paris bookshop.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

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

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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.

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

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

Ancient stone dildos and other odd pieces of medical history are displayed at this quirky Cyprus gem.