Starting from Porta Metronia, there is a pleasant walk along the outside of the Aurelian Walls, leading to Porta Latina and then Porta. S. Sebastiano. The first part of the route, to more than half-way up viale Metronio, is in the linear park built alongside the walls, with pedestrian and cycle paths and rest areas. There is a plaque on the ninth tower commemorating the restorations by Pope Pius IX, and there are various construction techniques visible on this stretch, witnessing the numerous restorations carried out in different ages. The stretch along via delle Mura Latine has needed careful restoring, as is about 400 metres long, includes eleven towers, excluding those of the gates, and four Papal coats-of-arms.Pictures by permission from Roma Capitale-Sovrintendenza Capitolina ai Beni Culturali
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