When visiting O'ahu, a trip to 'Iolani Palace - the only royal palace in the United States - is a must to learn more about the Hawaiian monarchy. Equally worthwhile is the Bishop Museum, which offers an in-depth exploration of the islands' history and culture. Nature enthusiasts can enjoy a mindful hike up the famous Lē'ahi (Diamond Head Crater) for breathtaking views over Honolulu. On the North Shore, the impressive waves at Pipeline and Sunset Beach attract world-class surfers. A true highlight is snorkelling in the protected Hanauma Bay, a marine reserve teeming with vibrant coral and tropical marine life. Don't miss exploring the island's vibrant food truck scene, where you can savour authentic local cuisine - opt for Hawaiian-owned businesses to support and connect with the local community as you experience genuine island flavours. For a deeper cultural experience, consider attending a traditional lū'au with hula dancing and Hawaiian cuisine - such as the Paradise Cove Lū'au - or visiting the Polynesian Cultural Center.