Mattie Kelly Fine & Performing Arts Center 100 College Boulevard, Niceville, FL 32578, The Mattie Kelly Arts Center is a multi-million dollar performing arts and educational complex located on the Niceville campus of Okaloosa-Walton College. Home to the Humanities, Fine and Performing Arts Division of OWC, the complex hosts some of Broadway's best touring shows, visiting artists, dance and opera companies. The 120,000 square foot complex includes a 1,650-seat Mainstage theater, the 195-seat, flexible Sprint Theater, an art wing with two galleries, a music wing, visual arts building, and the OWC amphitheater., 850-729-6000