One of the most evocative archaeological sites in Portugal, Citânia de Briteiros , 15km north of Guimarães, is the largest of a liberal scattering of northern Celtic hill settlements, called citânias (fortified villages), dating back at least 2500 years. It’s also likely that this sprawling 3.8-hectare site, inhabited from about 300 BC to AD 300, was the Celtiberians’ last stronghold against the invading Romans.
