Tuska Open Air Metal Festival, commonly shortened to Tuska, is a Finnish heavy metal festival taking place annually in Helsinki. The first Tuska took place in 1998 and the festival has since grown larger every year. The location of the festival has been in Kaisaniemi park in the middle of the city from 2001. However, since 2011, Tuska has taken place at the Suvilahti event field in the Kalasatama neighbourhood of the Sörnäinen district. The festival dates have always been in either June or July.
In recent years the attendance has grown and the festival has drawn up to 63,000 people in 2023. In 2006, the festival was almost sold out and over a combined three-day total of 33,000 attendees
The Suvilahti cultural centre is a former power and gas plant that has become home to a wide range of cultural actors, located in Sörnäinen which is a little more than one kilometre north from the coastal centre of Helsinki, near the district of Hakaniemi. The east side of Sörnäinen borders the sea.
Sörnäinen used to be primarily an industrial district with many shipping companies and warehouses, however, nowadays it is a thriving urban area divided into four districts: Vilhonvuori, Kalasatama, Sompasaari and Hanasaari. It also has two metro stations: Sörnäinen metro station and Kalasatama metro station in the Kalasatama quarter.