A lucus might become such a focus of activity that a community grew up around it, as was the case with the Lucus Augusti that is now Lugo in Spain and the Lucus Feroniae near Capena.
The capital city was an ancient Celtic settlement named in honour of the god Lugh (see Lyon), later Latinised as Lucus Augusti, and which became one of the three main important Galician-Roman centres alongside Braccara Augusta and Asturica Augusta (modern Braga and Astorga respectively).