Spoleto, while also showing the urban fabric obvious influences from the Roman era, it keeps an antique look - medieval, due to the time it was first flourishing Lombard Duchy, and then an important center of the Papal States. The most ancient origins of Spoleto belong to the arch of Drusus, 23 AD (at the Romanesque church of St. Ansano), the Roman theater, whose construction dates back to the early years of 'Empire, in addition to the fourth century early Christian basilica of San Salvatore (about 1.2 km). The Tower Bridge along 236 me up about 90 to 10 is a mammoth building arches connecting Monteluco and Colle Sant'Elia. Its function was to bring water from the springs to Spoleto Cortaccione. Historians do not agree on dating but it should have been built in the thirteenth century, probably on the ruins of an ancient Roman aqueduct. The bridge offers a splendid view of the city of Spoleto. The same Wolfgang Goethe, German dramatist and writer of the eighteenth century, devoted a page of his "Italian Journey" to this beautiful piece of architecture.