Fantastic day tour. We used our Helsinki card for the ferry and the tour so both were effectively free. The island is beautiful with many nooks and crannies to explore and lots of local history. Loads of public toilets available and some provision for disabled visitors, although most terrain looked difficult for wheelchairs. Well worth a visit.

We had a great day out to Suomenlinna. It was a €7 per person return ferry from Helsinki harbour and the ferry took approx. 20min. The island is amazing with a lot of history. The weather happened to be very good so we enjoyed a beer from the island supermarket in one of the many grassed areas. We also visited the museum which had a lot of information about the 1940's wars. I would allow minimum 5 hour round trip but you could definitely do longer.

The island is eaaily accessible by ferry that leaves from the south harbor (5 euro for the ferry). About 15 min ride. The island has many historical landmarks, with a massive fortress with lots of tunnels/passageways to explore. There are multiple cafes on the island with great coffee and views. There is also a museum, brewery and tourist information center. I would highly recommend spending a few hours on the island.

I never got to go to any of the on-site museums as I took the ferry over at 5pm but I still spent a solid 2 hours just wandering the island, exploring the tunnels, and admiring throw view. The sun doesn't set until ~10pm in May and it was unseasonably warm (18-25°C daily) so it was beautiful and well worth the trip even without the museums. I enjoyed it so much that if I return to Helsinki in the future I would love to see it again and explore their other islands.

Beautiful to say in one word. It is a short ferry journey for 5 euro from Helsinki Harbour. The island is so beautiful you don't want come out of it for long time. You have lot to see and walking around is the best way to see the whole place...