Santa Catalina Monastery construction started in in 1393, in a Romanesque style when Gothic standards were already taking hold. With Mendizábal's disestablishment (1837) the Franciscans were obliged to abandon the monastery, and the building's ownership and management passed to the army until the year 2000.
The monastery has two cloisters, the best conserved of which is in Renaissance style. The church was modified in the 18th century, when it changed from a cross-shaped ground plan to a single nave covered with a barrel vault on arches. Coloured wooden retable with Baroque ornamental designs. Some of its images are in churches in Ferrol. Inside the monastery, we can see the remains of capitals, statues, tombstones. Other sculptural remains from the 16th century can presently be seen in the San Antón Archaeology Museum (A Coruña).
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.