Serbia's modern sacral architecture got its main impetus from the dynastic burial church in Oplenac which was commisiond by the Karađorđeviċ dynastie 1909. With the arrival of Russian émigré artists after the October Revolution, Belgrade's main governmental edifices were planned by eminent Russian architects trained in Russia. It was King Aleksandar I. who was the patron of the neobyzantine mouvement. Its main proponents were Aleksander Deroko, Momir Korunović, Branko Kristić, Grigorijji Samojlov and Nikola Krasnov. Their main contribution were the royal castles on Dedinje, the Church of Saint Sava, St. Marks church. After the communist era ended Mihailo Mitrović and Nebojša Popović were proponents of new tendencies in sacral architecture which used classic examples in the Byzantine tradition.
Russian Empire
in Pushkin was the earliest and isolated experiment with Byzantine treatment of otherwise neoclassical structures. In 1830s Nicholas I of Russia promoted the so-called Russo-Byzantine style of churches designed by Konstantin Thon. Nicholas I despised true Byzantine art; Thon's style in fact had little common with it. Notably, Thon routinely replaced the circular Byzantine arch with a keel-shaped gable, and the hemispherical Byzantine dome with an onion dome; layout and structural scheme of his churches clearly belonged to neoclassical standard. True Byzantine art, popularized by Grigory Gagarin and David Grimm, was adopted by Alexander II of Russia as the de facto official style of the Orthodox Church. Byzantine architecture became a vehicle of Orthodox expansion on the frontiers of Empire. However, few buildings were completed in the reign of Alexander II due to financial troubles. Alexander III changed state preference in favor of Russian Revival trend based on 16th-17th century Moscow and Yaroslavl tradition, yet Byzantine architecture remained a common choice, especially for large cathedrals. Neo-Byzantine cathedrals concentrated in the western provinces, the Army bases in Caucasus and Central Asia, the Cossack hosts and the industrial region in Urals around the city ofPerm. Architects David Grimm and Vasily Kosyakov developed a unique national type of a single-dome Byzantine cathedral with four symmetrical pendentive apses that became de facto standard in 1880s-1890s. The reign of Nicholas II was notable for the architect's turn from this standard back to Hagia Sophia legacy, peaking in the Naval Cathedral in Kronstadt and Poti cathedral. These designs employed reinforced concrete that allowed very fast construction schedule; their interiors contained clear references to contemporary Art Nouveau yet the exteriors were a clear homage to medieval Constantinople. Russian Neo-Byzantine tradition was terminated by the revolution of 1917 but was continued by emigrant architects in Yugoslavia and Harbin.
The Basilica of the National Shrine of the Immaculate Conception is a large Catholic minor basilica and national shrine located in Washington, D.C., United States of America. The shrine is the largest Catholic church in the United States and in North America, and the tallest habitable building in Washington, D.C.Its construction of Neo-Byzantine architecture began on September 23, 1920, with renowned contractor John McShain and was completed on December 8, 2017, with the dedication and solemn blessing of the Trinity Dome mosaic.