5. Grand Wailea, Maui, Hawaii: The Grand Wailea takes Hawaii adventures to a new level, without ever having to leave the resort. The Wailea beach hotel has two pools: The Hibiscus Pool and the Activity Pool. The Hibiscus pool is contains over 2.2 million individual mosaic tiles and is reserved for guests 18 years of age and older. The younger crowd, however, can wreak havoc in the Activity Pool. Comprising more than 25,000 square feet and containing over 700,000 gallons of water, the activity pool consists of nine free-form pools throughout six different levels. Lazy rivers, jungle pools, rope swings, water slides, waterfalls, caves and a swim-up bar are just a few of the hideouts for kids and adults to enjoy.