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Highly recommended is the tour of the ring road that flanks the ancient and well-preserved curtain wall, if only for the splendid views that open along the route of the road; incomparable what can be enjoyed from the high sandstone spur dominated by the tower of the Onglavina, which embraces the Sibillini, the Maiella, the Gran Sasso, the Conero and the Adriatic; rugged stone peaks that sink into the dark green of the woods, slopes and valleys and, at the bottom, the blue expanse of the sea