Ho'omaluhia Botanical Garden.

One of the main attractions of Oahu is its beautiful beaches. Take a break at the famous Waikiki Beach, enjoy the waves at the renowned North Beach, or dive into the clear seas of Hanauma Bay. 2. Outdoor Activities Take a walk to the summit of Diamond Head to enjoy the spectacular views of the island, or explore the lush mountains and the views of Kualoa Ranch. Attraction Factors There are many historical and cultural landmarks. Visit Pearl Harbor and the USS Arizona Memorial to learn about the island's role in World War II, or explore the Polynesian Cultural Center to gain insight into the diverse cultures of the Pacific Islands.