Tallinn Town Hall, located in the main square, is the only surviving Gothic town hall in Northern Europe. The first recorded mention of the Town Hall dates from 1322. Its present form dates from 1402-1404, when the building was rebuilt. The spire was destroyed in an aerial bombing on March 9, 1944. It was rebuilt in 1950. The Town Hall is in the list of UNESCO World Heritage Sites with the Tallinn's Old Town.
The building has two main storeys and an almost full-sized cellar. The main façade is supported by an open arcade with eight piers and topped by a crenellated parapet. High gables and a pitched roof make the building elegant, but the slender octagonal projecting tower with a gallery for bells gives it particular finesse. The tower is crowned by a late Renaissance spire comprising three cupolas and open galleries.
Today the Town Hall is a representative building of Tallinn City Government, concert hall and museum. The entire building is open to the public in July and August, when less official receptions are held. In other times, visits must be agreed with the Town Hall in advance (except the cellar exhibition).
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.