Hytermä islands are nature reserve area and museum islands, about 7km from the centre of Kerimäki towards Hälvä. Hytermä was declared a protected nature area in the year 1931, and the fact that is has survived almost completely in its natural state is all down to an ex-rural police chief (1916-1940) Heikki Väyrynen, a.k.a. Romu-Heikki, and his wife. The islands have a one-of-a-kind collection of art made from rocks and easily walked nature paths. Hytermä can only be reached by boat which you can rent before rowing the 400m to the island. Once there you will also find a wonderful sandy beach and a pier. Hytermä is situated 7 km from the centre of Kerimäki (Savonlinna-Kerimäki 23 km), address: Hälvänsaarentie 80, Kerimäki. https://visitsavonlinna.fi/en/hyterma/