The Island of Hawai'i is the furthest south of any in the island chain, and is larger than all the other islands put together. It's also the home of the world's highest mountain (Mauna Kea) though much of the base is submerged. Nearby Kiluaea is the most active volcano in the world, and is also the most popular visitor attraction in a state that's full of visitor attractions. The Big Island, as it's called, is the only place where one can ski in the daytime and walk barefoot in a warm sea at sundown.