So in the three centuries prior to Roman conquest (3rd–1st century BCE), Marvão stood at a junction of the Celtici, Lusitani, and Vettones tribes, and its dominant strategic position offered line-of-sight long into the territories of all three tribes. A locally found head of a pig-like sculpture from the Verraco (Portuguese: berrão) culture of the Vettones is displayed in Marvão's museum.