No
Yes, Well From what I know, It is.
St. Petersburg is not classified as a megalopolis. A megalopolis typically refers to a large urban area that encompasses multiple cities or metropolitan areas, often with a combined population exceeding several million. While St. Petersburg is one of Russia's largest cities, it is a standalone city rather than part of a larger interconnected metropolitan region.
St. Petersburg is the name of a city and not a saint.
Floods in Saint Petersburg happened in 1824.
Saint Petersburg Mint was created in 1724.
Saint Petersburg Conservatory was created in 1862.
Bank Saint Petersburg was created in 1990.
Saint Petersburg Mosque was created in 1913.
Midnight in Saint Petersburg was created in 1996.
Saint Petersburg Governorate was created in 1708.
Saint Petersburg Governorate ended in 1927.
SKA Saint Petersburg was created in 1946.