Holm oak of La Pica Nature · Olmeda de las Fuentes, Cuenca del Henares, Madrid A notable tree protected by the Region of Madrid that grows alone in the middle of a wheat field; it is reckoned to be more than two hundred and fifty years old and its crown spreads some twenty-three metres, close to five hundred square metres of shade. Photo: Raimundo Pastor (CC BY-SA 4.0) What to see and do in Olmeda de las Fuentes