Veltrusy Mansion is a baroque château situated near the banks of the Vltava River, about 25 km north of Prague. The mansion is open to the public for visits.
The mansion was initially built in 1716 by architect František Maxmilián Kaňka for Count Václav Antonín Chotek of Chotkov and Vojnín. The original mansion was extended in 1764 by architect Giovanni Battista Alliprandi on the orders of Count Rudolf Chotek of Chotkov and Vojnín, who also commissioned the interior decoration. Further extensions and the annexes of the mansion were constructed in 1804.
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.