The Palace of the Despots dominates the Upper Town of Mystra. It is a great complex of buildings belonging to different times of construction. They started to be built by the Franks, possibly by Guillaume de Villehardouin, and were completed by the Byzantines (the Despot was usually a son or brother of the Emperor).
These palace constitutes a great example of the Byzantine architecture. The whole building complex is L-shaped and has been well-preserved until our days. The palace has four constructions. Some of them have 4 storeys, while others are two-storey mansions. The first building was the residence of the noblemen and the second one was the throne hall.
The Despot used to live in the fourth building, a four-storey construction dating from 1350-1400. The fifth building, built in the 15th century, was the palace of the Paleologos family. All buildings have numerous arches, chambers, attics and cellars. The exterior area is quite austere.
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.