The Trinity Church (Trefoldighetskirken) is one of the largest churches in Oslo (1000 seats). The church itself is in the raw red brick, while the vaults, arches and small columns have gray scale color. The nave is octagonal with a Greek cross superimposed, with the choir in the apse, shallow transept and rectangular entrance flanked by two slender, octagonal bell towers. A central dome rises above the church.
The Trinity Church was consecrated in 1858 by Bishop Jens Lauritz Arup. The church has a neo-Gothic central plant, with two towers and eight-sided dome, and was designed by architect Alexis de Chateauneuf (Hamburg, Germany), but some time after the work was entrusted to his pupil Wilhelm von Hanno, who made some modifications to the original plans and put his personal stamp on the details of interior decoration. The main body (1872) is the work of Claus Jensen, the altarpiece (1866) is a painting by Adolph Tidemand (the Baptism of Jesus), chandeliers were designed by Emanuel Vigeland in 1923, and Frøydis Haavardsholm was the designer of the stained glass windows.
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.