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Founded: 1545Category: Industrial sites in Sweden
Historical period: Early Vasa Era (Sweden)
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The Vattholma ironworks is one of the oldest in Sweden. Smelters are believed to have been active here back as far as the 15th century. Wattholma operated under the Crown until the end of the 16th century. Walloon forging was introduced during the 1600s and was used until the 1870s, when it was replaced by the Lancashire method. Wattholma also featured a blast furnace that was moved in 1758. Bar iron production ceased in 1905, but manufactory smithing and foundry operations continued.
The works were sold in 1939 to a fire appliance store in Stockholm. Housing was added in the 18th and 19th centuries. The old inn with its walled courtyard is found here, along with a storehouse and school. On the opposite side of Fyrisån River is the manorhouse, with its main structure from 1812 and annex from the 1700s. Most of the old buildings were demolished in the early 1970s and replaced with modern residences that resemble the originals.
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.