Commandeur Castle belonged to the German Knights Templar until the French revolution. The current building was constructed in the beginning of the 17th century in the so-called ”Meuse-region Renaissance style”, also abundantly to be found in Liège and Maastricht.
In the park of the castle the spring is situated that provides the ponds and the river Voer with water at a ratio of some 3000 litres per minute. In the ponds trout and sturgeon are bred.
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.