Located in the centre of the Old City Market Square, the monumental Old City Town Hall is one of the biggest and most magnificent town halls in Europe. It is a monument to Toruń's glory as the former trade empire of Hansa. The construction began in 1274 and it was extended and rebuilt between 1391 and 1399 and extended again at the end of the 16th century.
Today Town Hall hosts the District Museum, which is one of the oldest and the greatest in Poland. Its origins date back to the year 1861 when the German Städtisches Museum in Thorn (Municipal Museum in Toruń) was established; on the other hand in 1876 Polish Science Society of Toruń founded another museum. It was only 1930 when these two were combined into one Municipal Museum. The museum exhibits were among others archaeological artefacts and the elements of old Toruń, Gothic art gallery, coins and mints etc.
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.