Siega Verde The Siega Verde site is a cave site located in the villages of Serranillo and Martillán (Salamanca), on the banks of the Águeda River. In 1998 it was declared an Asset of Cultural Interest (BIC) and since August 2010 it has been considered a World Heritage Site by UNESCO. At present, the Siega Verde site can be visited by means of one of the different types of visits. If you want to know more, visit their website. Virtual Tour Augmented Reality application: Download the Application Aim the camera Discover the different animals engraved Download application