Kauai, Hawaii

For a true U.S. tropical destination, head to Hawaii. Home to some of the world's best islands, Hawaii is all blue lagoons and fragrant hibiscus. Kauaiis resplendent in rainforests, waterfalls, and beaches best seen on a hike or from your candy-striped beach towel. Lay down on the shore outside the Ko'a Kea Resort on Po'ipu Beach for the ultimate tropical respite.