The Church of San Juan de Berbío probably belonged to the monastery founded by Alfonso V in 1005; the Infanta Doña Urraca donated it to the Monastery of San Pedro de Eslonza in 1099.
The structure went through several redesigns in the fifteenth and sixteenth centuries. The most extensive was in the eighteenth century, which added square heads and porch trim. Of the original Romanesque design, all that remains are the basic building layout, the western facade double archivolt and bows and starts from the original facade. Until 1892, it was the parish church for Infiesto.
The church was destroyed by fire in 1936, during the Civil War, in which the eighteenth-century altarpiece was also burned.
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.