This is Porta Castiglione which is the nearest gate (3 blocks) to our apartment. While nearly all of the walls around the city are now gone, most of the 12 gates to the city still exist.
One of the things that I really appreciate about the gates (porte) is that there is a bus stop at each as part of the route that circulate the exterior of the city as the route to the train station. We can simply walk out the back gate of the complex we are in, cross the street and get on the bus. Perfecto!