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

A pair of gigantic baby heads greet passengers at Atocha Station.

A controversial art piece that harkens back to local folklore.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

Poet Antonio Machado's former residence offers the quintessential Castilian lifestyle of the provincial towns in the early 20th century.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

An ongoing medieval tradition of communal pig husbandry is honored with a handsome granite sculpture.

Images of neighbors past and present guard the streets of this charming alpine village.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

An unusual but excellent display created in the 1930s as propaganda against the Freemasons.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The tallest tower in Cáceres's Old Town.

A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

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

Two large posteriors in one giant statue.

Giant topiary dog once played a role in a terrorist bomb plot.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

Ancient serpentine sacrifice holder that has stood the test of time.

A fountain standing as a testament to a doomed alliance.

Ancient barriers wrap around what was once an important stop along the Silk Road.