The popular Suomenlinna Open-air theatre is located on Susisaari in the Ravelin Good Conscience, where the summer theatre has been operating since 1968. The performances are produced by Ryhmäteatteri. The theatre has more than 500 seats. The theatre has a canope, so it is a great place to go even on rainy days. The performance season is from June to August. The language of the plays is Finnish, but there are subtitles available in English and Easy Finnish on Wednesdays and Fridays.