An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

A historic Christian shrine nestled within a spectacular natural cave.

This underwater graveyard commemorates a group of murdered 16th-century missionaries.

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

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

The ruins of an ancient stadium that hosted gripping chariot and horse races.

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

This abandoned naval battery stood at the ready as recently as the 1980s.

A whimsical garden of outsider art in the Spanish countryside.

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

An ornate tower shows off a local artist's architectural flair.

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

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

An outsider folly near Madrid.

A modernist church in an ancient village.

This 47-story "M" needed 20 years to be completed

A contemporary art installation housed within a Gothic cathedral.

An archeological treasure trove stumbled upon by a couple of children.

Haunted tuberculosis hospital built by the patients.