The Archaeological Park of Lipari is located at the Diana district. In the park there are the remains of walls for a length of about 50 m, a tower of the 4th century BCE and some Roman fortifications built by Sextus Pompey.
Behind the Greek walls there are buildings of the Imperial-Roman period (2nd century AD). Within the walls there is a street with some home facades of the Imperial-Roman period, mainly located under the modern town and the traces of the town destroyed by the eruption of the 8th century BC. Beyond the walls there was the necropolis and few remains have been discovered. Near the northern entrance of the Park and the Archbishop’s Palace there are the remains of funerary monuments of the late Roman Imperial period and tombs of the 1st century BC.
In the same area there are walls built during the late Roman Imperial period which goe beyond the Via della Conciliazione, partially detached from the Park. San Calogero are the oldest thermal baths of the ancient world and they date back to the final stage of the Culture of Capo Graziano (between the end of the 16th and the beginning of the 15th century).
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.