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Founded: 1689Category: Miscellaneous historic sites in Sweden
Historical period: Swedish Empire (Sweden)
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Landsort lighthouse tower was built in 1689, with an upper conical iron section added in 1870. Open fires have been lit here since a long time ago. The first 'real' lighthouse was lit in 1651 and, until the now-standing tower was built, a couple of different buildings were used as the lighthouse. The 1689 tower was constructed to carry an open fire which ran on coal. In 1840, a colza oil lamp was installed. The flame ran on paraffin from 1887, and in 1938 it was electrified. Today the Swedish Maritime Administration owns and runs the lighthouse.
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.