Santa María de Sandoval Monastery was built on land donated in 1142 by Alfonso VII to Count Pedro Ponce de Minerva and his wife Estefanía Ramírez.
After receiving numerous donations and possessing extensive territories, it entered decadence in the fifteenth century. In 1592 and 1615 it was grass of the flames, reason for which it had to be rebuilt. The permanence of the monks remained until 1835, date in which the exclaustrado with the confiscation of Mendizábal took place.
Its architectural layout responds to that indicated by the Cistercian Rule. It has two great cloisters, although the one that is conserved is realized in century XVII, in him it maintains the severity of the Chapter Room.
The church is of plant of Latin cross, with three ships, cruiser and semicircular apses. The primitive gateway by the north gable, is Romanesque, and presents a unique resolution of its archivolts. The west, which is now the entrance, is a pointed arch, standing out its beauty by the simplicity of its construction and decorative elements based on floral elements, figures of monks and the calvary of the tympanum of the door. In the south gable rises the belfry that is of later times.
In its interior they emphasize the sarcophagi of the founders, arranged to both sides of the altar, in the middle mounted the major altarpiece in which participated between 1605 and 1618 Pedro Sánchez, Cistercian monk
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.