The Gulf of Finland (Finnish: Suomenlahti, Russian: Финский залив, Swedish: Finska viken, Estonian: Soome laht) is the easternmost arm of the Baltic Sea that extends between Finland (to the north) and Estonia (to the south) all the way to Saint Petersburg in Russia, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belongs to Russia and some of Russia's most important oil harbours are located furthest in, near Saint Petersburg.