Work on building Haderslev Cathedral began in the mid-13th century. It was originally a large cross-shaped single-naved church built of bricks and granite cubes recycled from an older church. Only the original transept is still standing. The church nave was soon expanded to include three tall naves under one roof. This type of church is called a hall church. The present three-naved choir from 1400 is one of the most beautiful choirs from the Gothic period and has three incredibly tall 16-metre windows that allow the light to flood in. When South Jutland was reunified in 1920, the church was elevated to the status of a cathedral in the newly established Haderslev Diocese.
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.