It is the name of a Russian city, which is port sebre the Baltic Sea. It was formerly called Petrograd and Leningrad. It is also the name of an American city, in the Tampa Bay area and belongs to the State of Florida.
St. Petersburg (Sankt Peterburg) is a city in Russia; until 1923 it was called Petrograd, and from 1924 to 1991 it was known as Leningrad. It has a population of approximately 4 . 900 . 000 inhabitants.