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

The famous sculptor had a hand in this imposing fortress.

An ancient Roman snake god, carved expertly into stone.

Built in 1925, this glass-roofed shopping arcade is known for its modernist Italian architecture.

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

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

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

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

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

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

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

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

A thorough look at the development and history of the underground's rolling stock of the Madrid subway system.

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

Once a resting spot for King Fernando VII.

An open-air sculpture museum in a park in Alcorcón.

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

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

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

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

One of the best examples of the modernist movement in Madrid.

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

The oldest building in Madrid.

The magic of Spanish aviation housed under one roof.