William I built the Walferdange Castle as a stud farm for breeding horses between 1824 and 1828. His son, William II, converted it into a royal residence where he stayed when visiting Luxembourg. It was however his son Prince Henry and his wife Amalia who extended the castle and its gardens while they lived there from 1853. Prince Henry, who was governor of Luxembourg, was well liked, especially in Walferdange where he distributed gifts to the children each Christmas. After his death in 1879, the castle lay empty until Grand Duke Adolphe adopted it as his summer residence in 1905, completely refurbishing the castle and its park. During the 20th century, the castle was used successively as a hospital, a teacher training college, an army barracks for the American and then the Luxembourg army and a pedagocical institute before the University of Luxembourg opened its Faculty of Language and Literature, Humanities, Arts and Education there in 2003.
Today the castle is one of the campuses of the University of Luxembourg, housing the Faculty of Language and Literature, Humanities, Arts and Education.
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.