Two large eyes painted anonymously on a mountain overlooking the city pay homage to an old legend.

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

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

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

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

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

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

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

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

This museum is known as the "Land of the Dinosaurs," but its full-scale dino models are just the start.

Cliffside houses provide a spectacular view from their perch above the valley.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

From grand battles to daily life, this Spanish museum offers a view of world history in miniature.

The odd cement nubs littering this Spanish square are actually the entrances to a series of buried silos.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

This house's itty bitty size means no humans allowed.

This architectural oddity is an oasis of green on the outskirts of Valencia.

This abandoned viewing platform has become a monument to unnecessary government spending.

A curious fountain that resembles a beloved character from the 1960s.

A copy of the brutal decapitation device that predated the French Guillotine by about 200 years.

The fossilized trunk of a tree that grew around 320 million years ago.

This now museum began supplying water to Sunderland during the mid-19th century.