Linked from
The 12 pages that link to Gulf of Finland, each with the reason it gives.
EstoniaRelated: It defines Estonia’s northern maritime boundary and links Tallinn with Helsinki.
Neva RiverRelated: The Neva empties into the gulf at Saint Petersburg.
TallinnRelated: Tallinn stands on its southern shore, opposite Helsinki.
Karelian IsthmusRelated: Its northern shore forms the isthmus’s western boundary.
SaimaaRelated: The Saimaa Canal connects the inland waters to this Baltic Sea inlet.