Skelby church was built originally around the year 1200 and the tower was added in 1400s. In 1857 the church was in bad shape and the nave and choir were rebuilt of yellow bricks. On the northern side of the nave, the ruling body of Niels Amager set up a chalk stone epitafium. There is an interesting octagonal limestone font from 1175-1200, made in Gotland.
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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.