sentences:  The Upper Mall included Denny's Pet World, Guitar Center, Hallmark Cards, Trader Joe's, and Big 5 Sporting Goods.The majority of these tenants were only accessible on the outside, shying away from the interior mall concept popular throughout the 1960s-1990s.Other malls in the Seattle - Tacoma area such as Northgate Mall and Lakewood Towne Center have switched to this concept as well, having tenants on the outside as well as the inside.