The 12 Treasures of Spain was a project that selected the purported "Twelve Treasures of the Kingdom of Spain". The contest was conducted by broadcasters Antena 3 and COPE. The final results were announced on 31 December 2007. Nine architectural monuments, two natural monuments and a monument pictorial were chosen.

The Cave of Altamira is a cave complex, located near the historic town of Santillana del Mar in Cantabria, Spain. It is renowned for prehistoric cave art featuring charcoal drawings and polychrome paintings of contemporary local fauna and human hands. The earliest paintings were applied during the Upper Paleolithic, around 36,000 years ago. The site was discovered in 1868 by Modesto Cubillas and subsequently studied by Marcelino Sanz de Sautuola.