The Visconti Castle in Pavia was built in 1360 by Galeazzo II Visconti, soon after the taking of the city, a free city-state until then. The credited architect is Bartolino da Novara. The castle used to be the main residence of the Visconti family, while the political capital of the state was Milan. North of the castle a wide park was enclosed, also including the Certosa of Pavia, founded 1396 according to a vow of Gian Galeazzo Visconti, meant to be a sort of private chapel of the Visconti dynasty. The Battle of Pavia (1525), climax of the Italian Wars, took place inside the castle park.
There are some significant proofs of the great frescoes showing battles, hunting and middle-class life scenes, which decorated rooms, porches and loggias. Another excellent proof is the complete decoration of the splendid Blue Room with its gold and lapislazuli. Perhaps it was the seat of the Visconti library with its 1.000 manuscripts and commissioned by Petrarch.
It presently houses the Civic Museums of Pavia (Museo Civici di Pavia) including the Pinacoteca Malaspina, Museo Archeologico and Sala Longobarda, Sezioni Medioevale e Rinascimentale Quadreria dell’800 (Collezione Morone), Museo del Risorgimento, Museo Robecchi Bricchetti, and the Cripta di Sant’Eusebio.
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.