Baños árabes de Ronda is a thermal building of the Arab time, the best conserved of its kind at the Iberian Peninsula. It is located at the old arab quarter of the city, being the formerly outside quarter of the arab medina (city) of Ronda.
The bahts were built near the Arroyo de las Culebras (snakes' stream), a perfect place in order to be provided of water, which was moved by a waterwheel, in an current perfect conservation state.
The chronology of the Ronda arab bahts starts at the 13th-14th centuries. The bath is divided into three main zones, following the Roman model of thermal buildings:cold water, warm water and hot water bathrooms. The hydraulic system of the thermal bath has arrived to our days almost complete.
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.