The Archaeological museum of Córdoba represents the most complete collection of historic Spanish artifacts in the world, with a staggering 33,500 items in total. Exhibits include prehistoric artifacts, ancient Iberian items including sculptures and reliefs, Moorish art, Roman antiquities, and archaeological finds from Medina Azahara. Located at the Palacio de los Páez de Castillejo, the museum grounds are also home to an archaeological dig site on the premises. Here, tourists will find the city's original Roman amphitheater, as well as homes and workshops dating back to the Middle Ages, all of which were discovered long after the museum found its home here.
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.