← Discover
Discover

Askö Nature Reserve and Storsand Beach

Large archipelago nature reserve with the sandy beach at Storsand, grazed meadows and coastal forest.

8 November 2026 · Current

Utsikt över Trosa och den omgivande sörmländska kustbygden.
Photo

Askö is one of the largest islands in the Trosa archipelago and is managed as a nature reserve by the Södermanland County Administrative Board. The island combines old-growth forest, open pastures and the sandy beach at Storsand.

Visiting Askö requires your own boat or arranged water transport. Parts of the island are a military area and marine research station, so always follow posted signs and reserve regulations.

Read more at Länsstyrelsen Södermanland.