The collection "Byzantium and Byzantium: the capital of the province and the provincialism of the capital" is devoted to the problem of relations and mutual influences of Constantinople and the Byzantine provinces and is compiled on the basis of the reports of the conference of the same name in 2017. The collection presents the works of leading world researchers from Russia, Germany, Great Britain, Italy, Greece and Turkey. The articles of the collection touch upon issues of political history, architecture, painting, literature, topography, etc. Intended for specialists in Byzantium and everyone interested in the Middle Ages.