Sierra de Guadarrama National Park Nature · Cercedilla, Cuenca del Guadarrama, Madrid The Sierra de Guadarrama National Park, declared by Law 7/2013, protects high Mediterranean mountains shared between Madrid and Segovia, in Castile and León; Cercedilla is one of the fifteen Madrid municipalities that contribute territory to it. It is the second most recently created Spanish national park, after Sierra de las Nieves, and the fourth largest; in 2015, with almost three million visitors, it was the second most visited in Spain. It protects eleven high-mountain ecosystems, with more than 1,280 species, thirteen of them endangered. Among the vegetation, Scots pine, Pyrenean oak and holm oak stand out, and among the fauna, which accounts for 45% of Spain's total, the Iberian wolf, wild goats and large birds of prey such as the Spanish imperial eagle. Photo: Miguel303xm (CC BY-SA 2.5) What to see and do in Cercedilla