Belvís de Monroy Castle has a long history beginning in the 13th century. Located in the central part of Spain, its survival through stylistically contrasting periods in history has resulted in an aesthetically eclectic architectural design. This castle was built in the Middle Ages on the site of an older Moorish fortress, and then rehabilitated into a palace during the Renaissance. At present it is closed to the public, but you can visit it from the outside. You can also visit the old village spreading at its feet. During your visit, don't forget to go into the local museum, where you will learn many interesting facts about the place.
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.