Otradnoye ( Russian : ????????? ) is a town in Kirovsky District of Leningrad Oblast , Russia , located 40 kilometers (25 mi) east of St. Petersburg on the left bank of the Neva River , at its confluence with the Tosna River . Population: 23,866?( 2010 Census ) ; 21,570?( 2002 Census ) ; 22,386?( 1989 Census ) . History A populated place on the territory of modern Otradnoye was first mentioned in 1708 as a village of Ivanovskaya ( ??????????? ) at the confluence of the Neva and the Tosna Rivers . In 1784, the land was acquired by empress Catherine the Great and a residence known as Pella estate was established. The estate was mostly destroyed on the orders of Paul I . In the 19th century, the area was a part of Shlisselburgsky Uyezd of Saint Petersburg Governorate . On February 14, 1923, Shlisselburgsky Uyezd was merged into Petrogradsky Uyezd . In January 1924, the uyezd was renamed Leningradsky. On August 1, 1927, the uyezds were abolished and Mginsky District , with the adm Express yourself. Organize your knowledge. Expand your mind. Discover the world. Revolvy connects you with interesting topics, lists and quizzes. Choose from hundreds of quizzes that test your knowledge. Search through millions of topics. Create a your personalized library of topics, and discover topics that others are following.