Recognising the strategic importance of the region, the Romans took it over and founded Augusta Praetoria in the 1st century. If you follow the trail of the ancient Consular Route of the Gauls, you will be surprised by the amount of Roman constructions which can still be seen. Pont-Saint-Martin, a city located a few miles from the border with Piedmont, takes its name from a Roman bridge which is still perfectly intact. In Donnas, a little further north, you can walk on the cobblestone route taken by the Gauls and pass under a Roman arch that has been sculpted into the rock. Aosta is strewn with structures from the Roman period: the Arco d'Augusto (August Arch), the Porta Praetoria (Praetorian Gates), and the Criptoportico Forense (a part of the forum).
Aosta's Roman theatre dates from the era of the emperor Claude. The theatre's main characteristic is its large monumental façade, measuring twenty-two meters high© OT Valle d'Aosta
Built in 25 BC, it serves as the main entrance into the ancient town of Aosta.© OT Valle d'Aosta
Roman ruins still remain throught the towns of the region.© OT Valle d'Aosta
It consists of a gallery with two naves, with three sides, and a quadrangular plan: sturdy tuff pillars support the solid arcades surmounted by vaults.© OT Valle d'Aosta
This photo displays one of the many testimonies of Aosta's Roman origins© OT Valle d'Aosta