I visited here on a gorgeous day in Helsinki. It was very windy once on the island and it was chilly even with the sun out. I wished I would've had a jacket with me. There are a few cafes on the island so you don't need to bring food although it seems that some people go for a picnic. I didn't bother going to any of the museums and just walked around and saw as much as I could. I think I spend 2-2.5 hours on the island.
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