Built by the Venetians in the early 13th century on a rocky promontory, the castle of Methoni is among the largest ones in the Mediterranean. You’ll be astonished at the bridge stone of 14 arches which connects the castle to the shore instead of the timber one that used to stand in its place before the Venetians ever got there. The celebrated symbol of Venice, the lion of St Marc, dominates the gate of the castle where immured reliefs, emblems, blazons, inscriptions, the huge gates, especially the main gate, above the moat, and the relics of two Ottoman bathhouses have survived.
At the south edge of the castle a fortified islet floats. Bourtzi, as it is called, a prison and place of executions during the Turkish Occupation, was built in 1500 and is connected to the Sea Gate of the castle with a paved tiny road.
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.