The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Shrapnel scars and bullet holes from the Spanish Civil War can still be seen in this monument to Spanish doctor Federico Rubio.

This dragon narrowly escaped demolition.

This sculpture pays homage to the street sweepers of Madrid since its inauguration in 2001 in Plaza Jacinto Benavente.

A neighborhood represented by an apparent geocentric and flat-earth model of the Solar System is hidden in the subway of Madrid.

This phone booth was recreated to honor "La cabina," considered the best horror film in the history of Spanish television.

Automatons that were once removed after one fell from the building.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

Hidden under a center for the elderly are the dungeons which were used during the Spanish Inquisition.

Dedicated to a young woman who broke gender barriers at the University of Madrid.

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

A pair of gigantic baby heads greet passengers at Atocha Station.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

Strange masks and obscure costumes are housed in this old Madrid corrala.

An automaton perched above an classic clock and watch store

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

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

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

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."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.