“…Finally, in the case of the Castile and Lion region (Spain), in 2009 its regional government approved the Regional Strategy against Climate Change [23], which develops regional policies to mitigate greenhouse gas emissions during this period. Castile and Lion (Figure 1), with an area of more than 90,000 km 2 [24], is the largest region in Spain, even larger than several states which are members of the EU, including Belgium and Portugal. On the other hand, Castile and Lion is one of the regions in the world with the most World Heritage Sites (WHS) declared by UNESCO, with 8 sites: Burgos Cathedral, old town of Segovia and its aqueduct, old town of Ávila with its extra-muros churches, old city of Salamanca, San Millán Yuso and Suso Monasteries (Burgos), the Médulas (León), archaeological site of Atapuerca (Burgos) and prehistoric rock art sites in Siega Verde (Salamanca) [25].…”