Ariminum (mod. Rimini), on the Adriatic, was an *Umbrian and Gallic settlement, which became a Latin colony (see ius latii) in 268 bce (Vell. Pat. 1. 14). An important harbour and road-centre, Ariminum was the key to *Gaul (Cisalpine), controlling the bottle-neck between Apennines and Adriatic (Polyb. 3. 61, etc. ; Livy 24. 44, etc. ; Strabo 5. 217). It remained loyal to Rome against *Hannibal (Livy 27. 10) and obtained Roman *citizenshipc.89 bce (Plin. HN 3. 115). Surviving sack by *Sulla, occupation by *Caesar, confiscation and colonization by the *triumvirs, attacks by Flavians (ce 69) and Goths (538), it became one of five towns composing the pentapolis maritima under the Ravenna exarchs (App. BCiv. 1. 67, 4. 3; Plut. Caes.32; Tac. Hist. 3. 41; Procop. 2. 10). Surviving monuments include the arch of Augustus, marking the end of the *via Flaminia, and a Tiberian bridge.