On SDSU campus, west side, 55th Street.
It's the big, oval building. If you're facing the front doors of the Aztec Rec Center, it's behind you to the right. If you're coming out of the ARC, then it's the gated building to the left.
As ToothPick pointed out it's right across the street from Parma Payne Alumni Center and next to SDSU ARC but its located on 55th street.
55th St., North of Montezuma
Viejas arena is on 5th Street right next to the Aztec Recreation Center and across the street from the SDSU alumni center.
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