BYZANTINE AND ROMANESQUE ARCHITEC TURE. Byzantine architecture is that which was developed under the Eastern Roman empire from the time of Constantine (323– 337) down to its fall in 1453. Offshoots of this style in Russia (see RUSSIAN ARCHITECTURE) and the Balkans, and along the east coast of Italy are frequently included. Romanesque archi tecture is the style which grew up in western and central Europe after the fall of Rome, 476, and prior to the development of Gothic. (See GOTHIC ARCHITECTURE.) The Romanesque type, found in Rome itself, is usually termed Early Christian or Basili can. (See BASILICA.)