The name of the Château de La Falize is derived from the Latin word Falise (Cliff, falaise) because of its position close to the top edge of a steep declivity of the valley sides of the river Meuse at the foot of which is city of Namur. Just south west of the Château the steep side of the Meuse valley is cut by the Houyoux, a tributary of the Meuse, which has created a smaller valley in the steep declivity of the Muse valley. The Houyoux is used by the land transport routes from Gembloux and Namur, to descend into the Meuse valley from the plain above.
In 1638, King Philip IV of Spain, leased this manor in 1638 to Gilles I of Glymes, Lord of La Falize, for the sum of 1500 florins. Honore de Glymes-Brabant, son of Ignace-François de Glymes-Brabant, Lord of la Falize built most of the current structure in 1757. The Château was the headquarters of William of Orange during the Siege of Namur in 1695.
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.