The Henthorne Performing Arts Center, operated by the city of Tulsa, houses both the Heller Theatre and the Clark Theatre. The Heller Theatre was established in 1981 and has a long history of producing quality contemporary and original plays. Heller Theatre also hosts the Laughing Matter Improv, one of the oldest improv troupes in Oklahoma. Heller also offers cutting-edge performances, side-splitting comedy and thought-provoking drama in Henthorne PAC's intimate, 75-seat black box setting. Clark Youth Theatre is targeted toward youth ages 8-18 and stages a variety of dramatic performances for the public throughout the year ranging from musicals to Shakespeare.