Small Castle of Santigoso Monument · A Mezquita, Viana, Ourense Image of A Mezquita, not of the place itself. A castro of some ten hectares dated between the 2nd century BC and the 1st century AD, the largest Iron Age enclosure documented in the municipality; the line of its defences can still be made out on the hillside. Photo: GFreihalter (CC BY-SA 3.0) What to see and do in A Mezquita