Built from 1306 during the village fortification by the Comte de Savoie Amédée V, Yvoire castle had a military goal to watch the navigation and control the road which linked Geneva to the high valley of the Rhône and to Italy.
For several centuries, the village of Yvoire was in the center of several strategic or religious wars between France, Bern, Geneva as well as the houses of Faucigny, Dauphiné and Savoie.
In 1591, a fire devastated the building which only found its shape back in the 20th century, when Félix Bouvier of Yvoire undertook several internal and external renovation works, like the roof and the watch towers setting in 1939.
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.