Helsinki Festival is the largest arts festival in Finland, organised annually in late summer. The festival’s aim is to make art accessible for all. The programme line-up features classical and world music, theatre, dance, circus and visual arts as well as a range of urban events. In 2018, Helsinki Festival is organised on Aug 17th – Sept 2nd.
More info: http://www.helsinginjuhlaviikot.fi/en/info/