The oldest parts of Guldrupe church is the nave, dating from the late 12th century. Oak planks decorated with dragons have however been found on the site, and indicate that there may have existed an earlier, wooden church on the spot. The tower dates from the early 13th century, and from the end of the same century dates the un-proportionally large choir and sacristy. The choir replaced an earlier, smaller choir, but plans to replace also the nave were never carried out. The church has not been substantially altered since the Middle Ages. The windows date from 1865 and the church was renovated in 1964-65.
The church is built of limestone. The nave and tower are Romanesque in style, while the somewhat later and larger choir is Gothic. The pyramidal tower spire is unusual in that its construction is largely original.
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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.