 After crossing the Rubicon, the latter made his legendary appeal to the legions in the Forum of Rimini.Ariminum was seen as a bastion against invaders from Celts and also as a springboard for conquering the Padana plain.As the terminus of the Via Flaminia, which ended in the town at the surviving prestigious Arch of Augustus (erected 27 BC), Rimini was a road junction connecting central and northern Italy by the Via Aemilia that led to Piacenza and the Via Popilia that extended northwards; it also opened up trade by sea and river.