St. Paul's Church (Pauluskirche) was constructed between 1898 and 1901 by Karl Moser (1860–1936) and Robert Curjel and features a Neo-Romanesque architectural style. The apse is fitted with a stone pulpit that is raised behind a stone communion table. The apse also features a gallery, with a central arch behind the pulpit, in which the organ and choir are placed.
It features artwork in Art Nouveau style including relief work on the church exterior above the main entrance by sculptor Carl Burckhardt (1878–1923), mosaics on the inner front wall by Heinrich Altherr (1878–1947) and stained glass windows by Max Laeuger (1864–1952).
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.