About the book: year / We publish the text of a lecture by Doctor of Historical Sciences, professor at St. Petersburg State University, leading researcher at the Institute of Slavic Studies of the Russian Academy of Sciences, laureate of the 2010 Enlightenment Prize Sergei Arkadyevich Ivanov “The Tsargrad Pathfinder: A Walk through Istanbul in Search of Constantinople”, read on September 15, 2011 at the club “PirO.G.I. on Sretenka” as part of the project “Public Lectures Polit.ru».