The crown jewel of Harrison's athletic facilities is the 2,400-seat Wildcat Sports Arena, home to the basketball, wrestling and volleyball programs.  Opened in 2002, it has been home to many sectional and district tournaments and large-scale invitationals.  The facility has four state-of-the-art locker rooms, training room and a spacious lobby and concession area.

In addition to athletic events, it plays host to Harrison High School's Commencement ceremonies, Showcase Southwest, a community-wide Veterans' Day ceremony and various large-scale religious services.