Skansin is a historic fortress located on a hill beside the port of Tórshavn. The fort was built in 1580 by Magnus Heinason to protect against pirate raids of the town, after he himself was nearly caught up in one such raid. The fort was expanded considerably in 1780 and went through a series of rebuilds for many years afterwards. During the Second World War the fort served Britain as a military base. Two guns date from the British occupation, standing along with many older Danish cannons.
One of the Faroese lighthouses, the Skansin Lighthouse, towers over the fortress, pointing the way to the capital. The strategic location of the fort offers tourists picturesque views of Tórshavn port, surrounding landscape and views out towards Nólsoy island.
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.