An out-of-place grove of sequoias thrives in northern Spain.

The deserted remains of a luxury hotel turned hospital ward.

Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

These striking ruins of a castle resemble a ship's stern.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

Religious dwelling in a Spanish volcano.

A small church ornamented with medieval erotic sculptures.

Hundreds of caves once used to store grains and animal feed.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

An outsider folly near Madrid.

The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

A historic Christian shrine nestled within a spectacular natural cave.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

This 7,000-year-old megalithic wonder covered by a Franco-era reservoir emerges in times of drought.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

A whimsical garden of outsider art in the Spanish countryside.