Shops spaces available at Northern Phoenix's premiere Power Center. 800,000 SF Regional Power Center. Co-tenants include Wal-Mart Supercenter, Lowe's, Barnes & Noble, Sport Chalet, Staples, Petco, Cost Plus, TJ Maxx, Old Navy, Pier 1 Imports and Bedmart. Located adjacent to I-17 at Happy Valley, and across from USAA's 573-acre office campus with over 5,000 employees.