Two Roman bridges survive in the Val Quazzola, marking the course of the ancient Via Julia Augusta (built around the 2nd century AD) through the hills above Quiliano. The remains of three more bridges are visible nearby, giving a clear sense of the original road's alignment through the valley.
The bridges are modest in scale but well-preserved, and the walk to reach them through the wooded valley is pleasant. The ruins of the medieval castle are visible on the ridge above — a reminder that the valley remained strategically important long after the Romans left.