Mark Twain Building (MT) is UMSL's premier athletics hub on North Campus, home to Chuck Smith Court, the vibrant venue for Tritons men's and women's basketball and volleyball games. It also features the athletics Swimming Pool, overlooking balconies, classrooms, meeting spaces, and offices supporting varsity athletics. The facility hosts a diverse lineup of events including games, commencement, career fairs, certification classes, and rentals, while adjoining outdoor fields support baseball and softball. A key spot for Tritons spirit, competitive play, and community gatherings since its long-standing role in campus life.