The rich and diverse architectural traditions of the Eastern Mediterranean and adjacent regions are the subject of this book, including the social and cultural developments of the Byzantine Empire, the Caucasus, the Balkans, and Russia, as well as parallel developments in Crusader and early Islamic architecture. A masterful, concise, and eminently readable synthesis of the architectural -- and thus also a key aspect of the cultural -- history of the medieval eastern Roman world and its neighbors. Drawing on his own ground-breaking research, on the original sources (written, material-cultural, and archaeological), and informed by an intimate knowledge of the vast modern literature in the field, Robert Ousterhout has produced an invaluable survey that will undoubtedly be the basic 'go-to' reference work for the subject for many years to come.