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

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

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

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

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

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.

Seaside ruins of a settlement that date back to the first century B.C.

This beautiful spit of land was once the summer playground of the king of Spain.

A living art gallery painted on a canvas of Monterey pine trees.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

This 19th-century fountain's namesake animal isn't what you think it is.