Mull Hill (also called Meayll Hill) is a small hill at the southern end of the Isle of Man, just outside the village of Cregneash. It is the site of a chambered cairn called Meayll Circle. Near the summit of the hill also lie the remains of a World War II Chain Home Low RDF station.
Mull Hill Stone Circle is a unique archaeological monument. It consists of 12 burial chambers placed in a ring, with 6 entrance passages leading into each pair of chambers. Sherds of ornate pottery, charred bones, flint tools and white quartz pebbles have been found in burial chambers. This archaeological monument was built around 3500 BC; it is a site of legends with diverse stories about haunting.
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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.