The Basilica di San Calimero is a church in Milan, northern Italy. Its name refers to Saint Calimerius (died 190 AD), an early bishop of the city. It dates from the 5th century but was almost completely rebuilt in 1882 by the architect Angelo Colla in an attempt to restore it to the 'original' medieval structure.
What remains of the ancient church include: the 16th century crypt, with a noble frescoed vault by the Fiammenghini; a small fresco with the Madonna and Two Female Saints (15th century, attributed to Cristoforo Moretti) in the apse; a Crucifixion by Il Cerano, and a noteworthy Nativity by Marco d'Oggiono. Other medieval frescoes are in the annexed sacristy.
The crypt also houses Calimerius' relics and a pit located in the same place in which the former's bones were found in the water.
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.