Arretium (the Etruscan Aritim) was one of the duodecim populi Etruriae and described by Livy as one of the "Capitae Etruriae". The Romans captured the city in 311 B.C. and it became a station on the via Cassia.
Description via Pleiades. Coordinates and heritage data from the Atika atlas.
Atika pings you when you walk or drive past heritage like this. Works offline, no account needed to explore.