
One of the most well-preserved medieval castles in Finland. Explore centuries of history, from royal visits to dramatic sieges. The surrounding grounds offer beautiful walks.
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Kastelholmsvägen, Sund
May-Sep: 10:00-17:00
The castle is first mentioned in 1388, making it Åland's only medieval castle. It was later expanded by Gustav Vasa and his sons before falling into ruin and being restored.
A Kastelholm ticket covers both Kastelholm Castle and the nearby Vita Björn prison museum. The summer ticket covers six Åland museums.
Kastelholm is open 2 May – 30 September, daily 10:00–17:00. Extended hours to 20:45 on 7–9 August 2026.
Kastelholm ticket: 10 € adults, 6 € children 7–17 / seniors / students. Children under 7 free. The same ticket also covers the Vita Björn prison museum. Summer ticket (6 museums): 20 € / 15 €. Check the official website for the latest prices and any combined tickets.