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 Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.