The walls of these four caverns are filled with art that dates back to the earliest human presence in Europe.

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

An automaton perched above an classic clock and watch store

This Roman arena once played host to bloody gladiatorial battles.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

These abandoned country fairgrounds are filled with replicas of Spanish monuments.

Built to power trains, the engines in this building provided the entire city of Madrid with electricity during the Spanish Civil War.

The cave where Saint Genadio meditated and played chess.

This tunnel was built in order to protect the village of Daroca from flash floods during rainy seasons.

An open-air museum showing how people on El Hierro lived from the time of the first settlers until the late 20th century.

A statue commemorating the island's tradition of dancing dwarves in Napoleon hats.

The history of this Moorish castle includes royals, a Mexican-Spanish association, and several attempts at lodging.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

The camera-toting gargoyle juts out from the exterior of a Gothic cathedral.

The largest cave on the island of Menorca was likely the site of Iron Age rites and rituals.

The longest eruption in the history of La Palma originated with this volcano in September 2021.

A bookstore dedicated to the intersection of comedy and art.

The world's largest sundial can cast a shadow more than 1,600 feet long.

Built to celebrate the glory of a new queen, this forgotten monument has moved around Madrid three times, reflecting 200 years of political whims and city redevelopment.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

The oldest building in Madrid.

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

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

Housed in a stunning Victorian building, this museum has the largest exhibition of knives, blades, penknives, and scissors in Spain.