Sierra de Guadarrama National Park Nature · El Espinar, Comunidad de Ciudad y Tierra de Segovia, Segovia Image of El Espinar, not of the place itself. The Sierra de Guadarrama National Park, declared by Law 7/2013 of 25 June, protects some 30,000 hectares of the Sistema Central -the massif that splits the Castilian plateau in two and separates the Duero and Tajo basins- shared between the provinces of Madrid and Castilla y León; the municipality of El Espinar contributes its Segovian slope of pine forests and broom scrub. It is the fourth-largest Spanish national park by area and, with almost three million visitors in 2015, the second most visited after Teide. It protects eleven high-mountain Mediterranean ecosystems unique in the peninsula, with more than 1,280 species and more than 1,500 native plants; among its fauna, which accounts for 45% of that of Spain, there are Iberian wolves, wild mountain goats and large birds of prey such as the Spanish imperial eagle. Photo: Roman Santos from Madrid, Spain (CC BY 2.0) What to see and do in El Espinar