Photo: Ralf Roletschek (Ralf Roletschek at de.wikipedia), CC BY-SA 3.0 via Wikimedia Commons
A pleasant little island to the north of the centre, filled with walking trails and a living history museum of authentic old Finnish houses collected from all over the country. An excellent half-day trip, especially in the summer, when many buildings have museum staff who practice crafts in traditional dress. There's a very pleasant if somewhat pricey summer café/restaurant atop a small hill at the center of the island. Entry to the park free, entry into the museum buildings costs €6 (€5 concession), buy tickets at entrance. Take bus 24 from Erottaja at the northern end of Esplanadi to the terminus (20–30 minutes), then walk across the bridge. Beware of mercenary squirrels that will raid your bags if you carry any food and gulls that take shares of your ice cream. closed for the 2025 season due to budget cuts..
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Ekudden
If you are visiting Seurasaari you can also take look into the daily life of Finland's long time president, Urho Kekkonen. His residence Tamminiemi was turned into a museum in the 1980s.
You can rent a standup paddleboard or a kayak.
It's safe to say that most people don't come to Helsinki for the beaches, but on a hot summer day in July Hietsu (as it is known to locals) is a good place to be. Beach volleyball, swimming and various events are popular. It's wide city center sand beach and moreover, surrounded with large park area, where people sunbathe and picnic in the summer time.
Didrichsenin taidemuseo
A collection of more than one thousand pieces of Finnish and modern international art, and artifacts from ancient Oriental and Pre-Columbian cultures. It is housed in a modernist building by famed Finnish architect Viljo Revell. Guided tours in English on the 1st Saturday of every month at 12:00.
The world-famous composer Jean Sibelius' monument was designed by sculptress Eila Hiltunen and unveiled in 1967. It is one of the most well-known tourist attractions in Helsinki as nearly every guided tourist tour is brought to Sibelius Park to marvel at this unique work of art resembling organ pipes, welded together from 600 pipes and weighing over 24 metric tons.