Castle of Arnado Monument · Vilamartín de Valdeorras, Valdeorras, Ourense A fortification also known as Torre Penela, in the parish of Arnado; it guards one of the mountain passes of a rugged district that runs from the 300 metres of the river to the 1,600 of the Alto da Lastra. Photo: Estevoaei (CC BY-SA 4.0) What to see and do in Vilamartín de Valdeorras