St. Petersburg (Russian: Санкт-Петербург) is a city in Russia. A city of federal significance. Administrative center of the North-Western Federal District and, until 2021, the Leningrad region. Located in the northwest of the country, on the shores of the Gulf of Finland in the Baltic Sea. The second important political, economic and socio-cultural center of Russia after Moscow. Founded in 1703. Former capital of the Russian Empire (1712-1918). The historical center and related complexes are included in the list of UNESCO World Heritage Sites: the Hermitage, the Mariinsky Theater, the Russian National Library, the Russian Museum, the Peter and Paul Fortress, St. Isaac's Cathedral and more. Since 2008, St. Petersburg has housed the Constitutional Court of the Russian Federation. Area - 1439 km. Population - 5,383,890 people (2019; 2nd largest in Russia; 4th in Europe).
The population of the St. Petersburg agglomeration is 5.4 million people (75th place in the world). The old names are Petrograd (1914-1924), Leningrad (1924-1991).
Sankt-Piter-Boerch ("St. Peter's City") was the original name of the city from May 16 (27), 1703 to 1720. Initially, the name of the fortress, built on Hare Island, soon the name spread throughout the city.
St. Petersburg (Russian: Санкт-Петербург, German: Sankt Petersburg) was a name from 1720 to 1914; also - the modern name of the city since 1991.
Petrograd (Russian: Петроград) is the name from August 18 (31), 1914 to January 26, 1924; changed by Tsar Nicholas II in the Russian style in connection with the beginning of the Russo-German war. Preserved in urban toponymy: Petrograd Island, Petrograd side, Petrograd district.
Leningrad (Russian: Ленинград) is the name from January 26, 1924 to September 6, 1991; changed by the Bolsheviks in honor of their leader Lenin.
Petersburg (Russian: Петербург, Latin: Petropolis)
Peter is a colloquial popular name; (Finnish: Pietari) is the Finnish name for the city.
St. Petersburg is the northernmost city in the world with a population of over one million people. It is located in the northwest of the Russian Federation, within the Prinevskaya lowland, on the Neva River adjacent to the mouth of the Neva Bay of the Gulf of Finland and on numerous islands of the Neva Delta. Height of the city above sea level: for central areas - 1-5 m, peripheral areas (