The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

Spain's largest bullring offers a unique glimpse at architecture and history.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

A haven for book enthusiasts across the street from Retiro Park.

Along the pavement of this neighborhood in Madrid are quotes from famous authors.

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

At this century-old barbershop, clients used to be entertained with a glass of brandy and a cigar.

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

This little sun pays homage to a massive gate that once stood at this location.

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

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

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

This girder was hit by a bomb during the Spanish Civil War, but nobody knew about it until 2016.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The world's largest wooden structure.

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

Once a resting spot for King Fernando VII.

The remains of this misplaced church were moved here stone by stone.

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

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

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

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

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.