<P> Situated on the Neva River, at the head of the Gulf of Finland on the Baltic Sea, it was founded by Tsar Peter the Great on May 27 (O.S. 16) 1703 . On 1 September 1914, the name was changed from Saint Petersburg to Petrograd (Russian: Петрогра́д, IPA: (pjɪtrɐˈgrat)), on 26 January 1924 to Leningrad (Russian: Ленингра́д, IPA: (ljɪnjɪnˈgrat)), and on 7 September 1991 back to Saint Petersburg . Between 1713 and 1728 and in 1732--1918, Saint Petersburg was the capital of Imperial Russia . In 1918, the central government bodies moved to Moscow, which is about 625 kilometres (388 mi) to the south - east . </P> <P> Saint Petersburg is one of the modern cities of Russia, as well as its cultural capital . The Historic Centre of Saint Petersburg and Related Groups of Monuments constitute a UNESCO World Heritage Site . Saint Petersburg is home to the Hermitage, one of the largest art museums in the world . Many foreign consulates, international corporations, banks and businesses have offices in Saint Petersburg . </P> <P> An admirer of everything Dutch, Peter the Great originally named the city, Sankt - Peterburg (Russian: Санкт - Петербург; note that the Russian name lacks the letter s between Peter and burg). On 1 September 1914, after the outbreak of World War I, the Imperial government renamed the city Petrograd (Russian: Петрогра́д, IPA: (pjɪtrɐˈgrat)), meaning "Peter's city", in order to expunge the German - sounding words Sankt and Burg . On 26 January 1924 it was renamed to Leningrad (Russian: Ленингра́д, IPA: (ljɪnjɪnˈgrat)), meaning "Lenin's City". On 6 September 1991, the original name, Sankt - Peterburg, was returned . Today, in English the city is known as "Saint Petersburg". Local residents often refer to the city by its shortened nickname, Piter (Russian: Пи́тер, IPA: (ˈpjitjɪr)). </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table>

What name was the city of st. petersburg renamed a second time