Blois Cathedral (Cathédrale Saint-Louis de Blois) is a Roman Catholic cathedral, and a national monument of France, in Blois. It is the seat of the Bishopric of Blois, established in 1697.
This was previously the collegiate church of Saint-Solenne, the original building of which dated from the 12th century. Apart from some traces in the crypt nothing survives of this. The façade and the bell tower were built in 1544. The nave was destroyed by a hurricane in 1678, and the reconstruction in Gothic style took place between 1680 and 1700 under the architect Arnoult-Séraphin Poictevin (d. 1720). The Lady Chapel by the architect Jules Potier de la Morandière was added in about 1860.
To celebrate the church's elevation to a cathedral in 1697, Louis XIV presented the organ loft in 1704. The new see thereupon took the dedication to Saint Louis.
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.