Borromeo Castle of Peschiera is the oldest possession of the Borromeo family in Lombardy. The family came originally from San Miniato in Tuscany. The Borromeo family became wealthy due their commercial and financial activities abroad. In 1435, Banco Filippo Borromeo & Compagni set up a branch in London.
In 1432, Vitaliano Borromeo was granted to fortify Peschiera farmhouse. In the decades of the sixteenth century, the castle was entirely restored by Renato. It was Renato who gave the building its present residential character. The castle Borromeo is one of the few still surrounded by a moat full of water as it had been excavated more than five centuries ago.
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.