Rollag Stave Church was probably originally built in second half of the 12th century, though not much is left of the original church. Originally, the church has been a simple church with a rectangular nave. It was first mentioned in written sources in 1425. It was rebuilt around 1660 into a cruciform church. Around 1760, an additional lining wall was placed on top of the structure and the church was extended to the west.
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.