A wonderful collection of fossilized dinosaurs and other creatures that roamed the landscape millions of years ago.

Whimsical sculptures and caves chiseled by nature over the millennia.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

Peek into a cave of giant, glimmering crystals.

A spectacular walk on the flank of a gorge.

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

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

The atmospheric ruins of a historic church can be found on a hill above the city of Oviedo.

Stormy conditions send jets of seawater bursting through holes in the cliffs.

Geological storytelling.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

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

A historic Christian shrine nestled within a spectacular natural cave.

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

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This ancient Spanish castle sits high upon a hilltop.

"Alleys of Stone" form natural mazes in Spanish natural park.

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

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Mine shafts and hard pastries await visitors at this massive mountain of salt.