The small Rubicon River, only 29 kilometers long, flowing in the north of Rimini is the same legendary river associated with the name of Caesar and his catchphrase "cross the Rubicon", meaning the need to make a difficult risky decision. In the 50s. BC e. The Roman Senate legally forbade proconsuls, one of whom was the brilliant commander and strategist Gaius Julius Caesar, to lead troops within Italy, apparently fearing, not unreasonably, the seizure of power in Rome. But in 49 BC. e., returning from a successful campaign in Gaul, Caesar violated the ban. Legend has it that, having made his decision, he exclaimed: "The die is cast!" and crossed with the legionnaires across the Rubicon River, which in those days was the border between Gaul and Italy. This led, in the end, to the seizure of power by Caesar in Rome.

Today, tourists like to take pictures at a small sign "Rubicone" at the exit from Rimini.