University of Osuna functioned from 1548 until 1824. The building of the former university is significant both architecturally and for its long history as a seat of the university. Its construction was ordered by Don Juan Téllez Girón, founder of the university. The First Duke of Osuna was responsible for numerous buildings in his domain, nearly all of a religious character. The university building is, therefore, particularly notable as an essentially civil building devoted to education.
The buildings erected under the patronage of the First Duke of Osuna are important primarily because of the adoption and diffusion of new stylistic currents and ideas from the Italian architecture of the time. The Renaissance aspects of the buildings are patent, as is the relation to the ideology of humanism in a building expressly created as a center for modern education.
The surviving university building testifies to the Renaissance aesthetics, providing one of the most singular and defining architectural examples of Osuna's past greatness.
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.