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

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Artist Natividad Sánchez wrote a new ending for one of Roman mythology's tragic love stories.

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

The oldest vestiges of Madrid found here, have been incorporated into this new museum.

Commonly acknowledged as the only public monument to the Devil himself.

An automaton perched above an classic clock and watch store

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

The video game-themed street art first popped up in the French city.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Before the electric telegraph, a chain of stone towers carried messages across France.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This World War II-era bunker hides between medieval chapels in Nijmegen's city center.

Organisms normally seen under a microscope decorate this church.

The largest airborne operation in history was launched to capture this bridge.

A German apartment building hosting as many trees as human occupants.