Montes Universales Nature · Guadalaviar, Sierra de Albarracín, Teruel The Montes Universales are a mountain system located on the southeastern edge of the Iberian System, between the provinces of Teruel, Guadalajara and Cuenca, whose peaks range between 1,600 and 1,935 metres in altitude. Administratively they belong to the Teruel comarca of the Sierra de Albarracín, with which they are often confused geographically. Their highest peak is the Caimodorro, at 1,936 metres, followed by Sierra Alta and the Muela de San Juan, at the foot of which lies Guadalaviar, at over 1,500 metres in altitude. There the Guadalaviar river rises, which after passing through Teruel takes the name Turia, and a few kilometres from the village lies also the source of the Tagus river, marked with a monument. Next to the Muela de San Juan is Griegos, the second-highest village in Spain. Photo: B25es (CC BY-SA 4.0) What to see and do in Guadalaviar