A Complete Guide to Exploring Ala Moana Center: A Must-Visit for Tourists in Honolulu. When visiting Oahu, Hawaii, there’s one destination that effortlessly combines the island’s natural beauty with world-class shopping, dining, and entertainment—Ala Moana Center. As the largest open-air shopping mall in the world, this bustling retail paradise offers an experience like no other. Whether you’re a shopaholic, a foodie, or simply looking to soak in the island’s vibrant atmosphere, Ala Moana has something special for every traveler. :) 1. Retail Therapy: Shop Till You Drop, 2—dining at Ala Moana, and more.