The oldest building in Madrid.

Nicknamed the "Spirit of Paul Klee," this colorful apartment building features an array of multicolored panels.

This Art Nouveau gate still stands at the former entrance of a 20th-century Spanish writer's colony.

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

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

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

Order cookies baked by cloistered nuns in a 400-year-old monastery.

These distorting, funhouse mirrors achieved fame in a renowned piece of Spanish theater.

In this 400-year-old hotel in Madrid, you'll find a comb in every room, an old clock, and maybe a ghost.

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

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

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

This piece of early engineering is rather unknown despite its location in the heart of Madrid.

The remains of a convent turned military barrack in the heart of Madrid.

King Carlos IV laid the first stone during construction of this chapel.

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

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

Dr. Fleming's work saved the lives of many bullfighters thanks to his discovery of penicillin.

Inaugurated three times, this tower offers some of the best views of Madrid.

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

This modernist bridge highlights the bear as a symbol of Madrid.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

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