Also known as the Valley Isle, this second-largest Hawaiian island boasts breathtaking scenery and some of the world’s best beaches, making it a perennial favorite for nature lovers, beach bums and everyone else in-between. The island boasts a robust national park system. Wai'anapanapa State Park is a great example of the island’s coastal geology, with its anchialine pools, caves, natural arches, seastacks and blowholes making for great photo ops. Winding through the popular Road to Hana brings you to Haleakala National Park, housing the massive Haleakala Volcano and Crater, and the waterfalls and pools of Oheo Gulch. The well-maintained paths and park accommodations (hikers can even rent cabins in the Haleakala Crater) make Maui a definite hiker’s destination.