Park of los Alcornoques Nature · Tres Cantos, Área Metropolitana, Madrid A woodland park of thirty hectares where 967 pines and more than 1,400 holm oaks and cork oaks have been counted, together with junipers and lavender typical of Mediterranean scrub; it is walked on dirt tracks from Avenida de Almenara. Photo: José Antonio Herrera (CC BY-SA 3.0 es) What to see and do in Tres Cantos