Synonyms for Saint Petersburg (same or very similar meaning)
WordNet sense 1 (a city in western Florida on Tampa Bay; a popular winter resort):
St. PetersburgWordNet sense 2 (a city in the European part of Russia; 2nd largest Russian city; located at the head of the Gulf of Finland; former capital of Russia):
Leningrad, Peterburg, PetrogradFrom the ODE community, based on WordNetadd/edit