Ensure a full vacation with sites you’ll find only on Oahu: Pearl Harbor Historic Sites; the Polynesian Cultural Center in Laie; the state’s only water park, Wet’n’Wild; and Iolani Palace, the home of Hawaii’s monarchy. You can also hike to the summit of Diamond Head, cool off in the marine sanctuary of Hanauma Bay and head out to the wild North Shore with its string of white sand beaches. Rest assured there’s so much more to do; you won’t have enough time to enjoy them all!