The Joann Mullen Gymnasium has a capacity of 1,800 seats, while the a 400-seat David M. Hallman III Aquatics Center boasts an aquatic complex consisting of an all-deep eight-lane short course competition pool as well as a shallow three-lane 25 yard warmup pool.
Until 2010, Prep played all its home football and soccer games at Erie Veterans Memorial Stadium.
Prep used $8.8 million in financing from three area banks to help build the center.
In its inaugural game on September 10, 2010, the Cathedral Prep Ramblers defeated the Central Tech Falcons 55–9.
The gym and swimming facility at the complex are named the Joann Mullen Gymnasium, and the David M. Hallman III Aquatics Center.