Church of St. John the Baptist and St. John the Evangelist, since 1935 Minor Basilica, since 1992 the Cathedral of Toruń Diocese, is former main parish church of Old Town of Toruń. One of three Gothic churches of the town, built from brick, an aisled hall with a monumental west tower. The first church from the 13th century was a small hall without aisles and with polygonal presbytery. This was replaced by aisled hall church in the first half of the 14th century, which has been rebuilt many times and extended until it reached its present form at the end of 15th century. Interior is richly decorated and furnished. The earliest painted decorations in the presbytery date back to the 14th century and depict the Crucifixion and the Last Judgement. One of the side chapels is connected with Nicolaus Copernicus. There is a 13th-century baptismal font, supposedly used for baptizing the astronomer, 16th-century epitaph to him, and 18th-century monument. At the tower hangs Tuba Dei, the third-largest bell in Poland, cast in 1500.
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.