Lyon Cathedral was founded by Saint Pothinus and Saint Irenaeus, the first two bishops of Lyon. The cathedral is also known as a Primatiale because in 1079 the Pope granted to the archbishop of Lyon the title of Primate of All the Gauls with the legal supremacy over the principal archbishops of the kingdom. It is located in the heart of the old town, less than five minutes away from the banks of the Saône river, with a large plaza in front of it and a metro stop nearby providing easy access to and from the city center.
Begun in the 12th century on the ruins of a 6th-century church, the cathedral was completed in 1476. The building is 80 meters long (internally), 20 meters wide at the choir, and 32.5 meters high in the nave. The cathedral organ was built by Daublaine and Callinet and was installed in 1841 at the end of the apse and had 15 stops. It was rebuilt in 1875 by Merklin-Schütze and given 30 stops, three keyboards of 54 notes and pedals for 27.
Noteworthy are the two crosses to right and left of the altar, preserved since the council of 1274 as a symbol of the union of the churches, and the Bourbon chapel, built by the Cardinal de Bourbon and his brother Pierre de Bourbon, son-in-law of Louis XI, a masterpiece of 15th century sculpture.
The cathedral also has the Lyon Astronomical Clock from the 14th century.
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.