Seurasaari (Swedish: Fölisön) is an island and a district in Helsinki, Finland, known mostly as the location of the Seurasaari Open-Air Museum, which consists of old, mainly wooden buildings transplanted from elsewhere in Finland and placed in the dense forest landscape of the island.
Every summer, many Helsinkians come to Seurasaari to enjoy the rural, peaceful outdoor atmosphere. Despite the visitors, the island has a variety of wildlife, especially birds, but also red squirrels and hares. The height of the island's popularity is at Midsummer, when a huge bonfire (Finnish: juhannuskokko, Swedish: midsommareld) is built on a small isle just off the island's coast, and ignited by a newlywed couple. Thousands of people, both tourists and Helsinkians, watch the burning of the bonfire from both Seurasaari itself and from boats anchored near it.