St. Nicholas Cathedral is the primatial cathedral of the Orthodox Church in America. The original parish church was founded in 1930 as the Russian Orthodox Church of Saint Nicholas. In 1949 the Synod of Bishops authorized the parish to be the church's National War Memorial Shrine and a national campaign to build a monumental Orthodox church in the capital of the United States was begun. The property upon which the cathedral is built was purchased in 1951. The substructure (basement) was completed in 1954 and was used for church services until the superstructure was completed in late 1962. A bell tower commemorating the millennium of Christianity in Russia was dedicated in 1988.
The cathedral architecture is based on the 12th century St. Demetrius Cathedral of Vladimir, Russia. Beginning in 1991, dedicated iconographers from Moscow led by Alexander Maskalionov painted icons throughout the nave in the traditional style. This work was completed in 1994.
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.