The poster shows the first results of a project that aims to analyze early Roman occupation and organization strategies in conquered territories of Hispania during a period previous to urban foundations. Specifically we focus on Puig Castellar de Biosca, a Roman site that outlines one of the main routes of penetration into the Citerior province. Here, we analyze its structural features and functional interpretation. Citerior province. Here, we analyze its structural features and functional interpretation.