Ruissalo

thumb|Aerial view of Ruissalo thumb|Ruisrock 2016 in Kansanpuisto Park. Ruissalo (; ) is an island in the Archipelago Sea and a district of the city of Turku, Finland. The island is located to the south-west of the city, between Hirvensalo and Pansio in the mainland. It is rather sparsely populated, having a population of only 126 (), with an annual growth rate of 3.97%. The villas on the island are considered culturally and historically valuable in Finland. Some are used as guesthouses; some are owned and run by foundations, labor unions, sports teams, and private enterprises in the area; some can be rented freely for days for private parties such as weddings; some have cafeterias in them. Private ownership exists – a couple villas even have renters with very selective occupancy. Some villas have deteriorated because of the high maintenance costs due to the historical building methods that must be used here.

One of the largest old oak forests in Finland is situated on the island and many parts of it are included in nature conservation programs. According to Karhu et al., “the total area of the oak-dominated woodland is 170 hectares, representing approximately the half of all oak-forests of Finland.” thumb|Kukkarokivi at Ruissalo in March 2013