Tower of Altomira Monument · Navajas, El Alto Palancia, Castellón The Altomira tower, in Navajas (Alto Palancia, Castellón), is a watchtower and communications tower listed as bien de interés cultural (Spain's highest level of heritage protection). It stands on a hill overlooking the town, one kilometre from the urban centre, in the Altomira site that gives it its name. Its dating is uncertain: some authors consider its foundations Roman, while others, such as Vicente Forcada Martí, place it around the 11th century, as a border tower linked to Segorbe Castle. It has a truncated-conical plan topped with battlements, standing 15.5 metres tall with an outer perimeter of 21 metres; its masonry combines river pebbles and lime mortar at the base with rough stone on the upper floors, arranged over five storeys connected by a staircase, with defensive arrow slits particularly numerous on the third and fourth. Photo: Enrique Íñiguez Rodríguez (Qoan) (CC BY-SA 3.0) What to see and do in Navajas