Järsö-Nåtö Nature Reserve
A protected area of leafy woodland and shore on the islands south of Mariehamn.
Updated 3 September 2026
The Järsö and Nåtö islands south of Mariehamn are linked by causeways and hold a protected area of deciduous woodland, meadow and shore that is unusually rich for a Baltic archipelago: hazel, oak, elm and ash rather than the pine of the outer islands, with orchids in the meadows and a biological station on Nåtö. Marked paths run through it and the shore is close throughout. The Nåtö manor house stands within the area and the station operates out of its buildings.
Highlights
- The deciduous woodland - hazel, oak, elm and ash rather than pine.
- The meadows - grassland holding orchids and other rich flora.
- The biological station - the research base on Nåtö.
- The shore - Baltic coastline running alongside the paths.
When to go
May to September is the season, and late May to June is best for the orchids and leaf. Autumn colour is good in September. Winter leaves the paths snow-covered.
Practical notes
The reserve is small and the paths are short. Mosquitoes in early summer are a real nuisance. Parts of the area are private and access is restricted.
Nearby
Mariehamn is north, and Lemböte is east.
What to pack for Järsö-Nåtö Nature Reserve
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Warm base layers - Merino or synthetic against the skin - never cotton, which chills when damp. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
- An insulated + windproof jacket - A down or synthetic layer under a hard shell handles most cold. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.
