The Torre de la Malmuerta is a gate tower in Córdoba. It was built in 1406–1408, by order of King Henry III of Castile, over a pre-existing Almohad structure, to defend the gates of Rincón and Colodro. Later it was also used as a prison for nobles.
Having an octagonal plan, the tower has an annexed arch.
The names, meaning 'Tower of the Wrongly Dead Woman', refers to a woman who, according to a legend, was killed here by her husband after a false accusation of adultery.
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.