Valga is first mentioned as a meeting point of tradesmen in the Riga Credit Book of 1286, but it got its city rights only in 1584 from the king of Poland, Stefan (István) Bathory, who was originally Hungarian. To commemorate this, a monument to Stefan Bathory was opened opposite St John's church in the centre of the town in 2003.
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.