Aqueduct of els Arcs Historical milestone · Planes, El Comtat, Alicante Image of Planes, not of the place itself. Raised in the sixteenth century to carry the water of the Catamarruc spring to the market gardens of the valley, it crosses the ravine with a double arcade of ashlar. It remains the most visible element of the historic hydraulic system of the area and can be walked. siglo XVI Photo: user:falconaumanni (CC BY 3.0) What to see and do in Planes