This 30,000 seat sports arena was designed to be flexible, versatile and combine the outdoor feeling of an amphitheatre, the efficient space planning and crowd control of a large hockey arena and the intimacy and ambiance of a theatre. A retractable sunroof and wall panel system was designed to allow 17,500 seats to enjoy the open air experience while still accommodating for 20,000 seats to be fully enclosed for year-round operation. This design was a winning entry of a developer proposal call.