To the west of the Dionysos theatre and quite close to the cliff of the Acropolis lies the Asklepieion, the sanctuary of the healing god Asklepios dated to 420 BC. Functioning pretty much as hospitals, the asklepieia were of immense importance in ancient Greece, the most popular being the Asklepieion of Epidaurus. Besides the usual facilities for sheltering the pilgrims, the core structures of the Athenian complex were the temple of the god and the enkoimeterion (dormitory). That was a large two-storey stoa for the enkoimesis of the patients, a dream-like and rather hallucinatory state of sleep induction, practised in those shrines. While in hypnotic state, the patients waited to receive a dream vision of the god who would either give medical advice or even miraculously cure them. Votive offerings that came to light from the site often depict healed body parts. Characteristic examples are on display in the Acropolis Museum.
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.