Modica Castle is located on the top of a small mountain. For a long time it was the political center of the Modica County, inhabited first by the counts and then by the governors, who succeeded each other without ever changing the Castle with other administrative offices. The current structure can be widely visited, although some points have been destroyed over time, still leaving some remains thanks to which it was possible to reconstruct important pages of the history of Modica.
The first construction of the Modica Castle dates back to 8th century, built not only to host the reigning family, but also for military and prison uses. Unfortunately, little remains of the 5 original towers and of the entire walls that surrounded the fortress of Modica, destroyed over time, also due to the earthquake of 1693.
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.