Château de Saint-Denis-sur-Loire dates originally from the early Middle Ages. It was enlarged in the 13th century and acquired by Philippe Hurault in 1341. It still belongs to the successors of Hurault family. The castle was again restored in the 18th century.
This place is very famous, thanks to its thermal mineral water resort from more than a thousand year. During the 16th century Catherine de Medici and Marie de Medici, Queens of France, visited several times there. The baths were restored in 1851 and bottled mineral water was brought also to Paris.
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.