Finland's largest lake district narrows to a strait right beneath Olavinlinna, a medieval castle on its own island in the middle of Savonlinna. Zander are the prize catch working the strait's current, and perch and pike are common throughout Saimaa's labyrinth of connected lake basins.
See Lake Saimaa, Savonlinna (Kyrönsalmi strait) and all places — or add your own discoveries.