In St. Petersburg, employees of the State Museum of Urban Sculpture have begun routine preventive maintenance of monuments. Restoration specialists cleaned the monument to Vladimir Lenin on the square near the Finlyandsky railway station. The work was carried out using aerial platforms and high-pressure washers. The procedure involves applying a special detergent with a neutral pH, which effectively removes accumulated dirt, dust and limescale over the winter without damaging the patina of the bronze. Before starting the washing process, restorers traditionally inspect and photograph the sculpture's condition to identify possible defects or corrosion. April 22 marks the 156th anniversary of the birth of Vladimir Ilyich Lenin (1870-1924). Vladimir Lenin (Ulyanov) is a Russian revolutionary, the greatest Marxist theorist and the founder of the first socialist state in world history, the USSR. He was the leader of the Bolshevik Party and headed the Soviet government as the first Chairman of the Council of People's Commissars. His political activity had a fundamental impact on the world history of the 20th century.