Zelenogorsk (Russian: Зеленого́рск), known as Terijoki prior to 1948 (a name still used in Finnish and Swedish), is a municipal town in Kurortny District of the federal city of St. Petersburg, Russia, located in part of the Karelian Isthmus on the shore of the Gulf of Finland.

Ten years later, in April 1917, he would return through the Terijoki border control at the head of the contingent of Bolshevik exiles that had accompanied him from Switzerland.

When the Republic of Finland gained independence on 6 December 1917, Terijoki became a part of it, and remained so until it was occupied by the Soviet Union during the Winter War (1939-1940).

During the Winter War Terijoki become known as the seat of Otto Wille Kuusinen's Finnish Democratic Republic.

At a concert in honor of City Day in 2009, known musicians performed, such as Music hall theatre of St. Petersburg, Edita Piekha, and others,[8] The current body of local government - the Municipal Council - has been operating since 1998.