CoCo Key Water Resort Philadelphia

At any given moment, 150,000 gallons of water are churning through CoCo Key Water Resort, fueling the nearly 1,000 feet of water slides weaving through the 55,000-square-foot indoor water park attached to the Hotel ML. On the slide Shark Slam, patrons plummet four stories, and on the Dip-In Theater little ones gently glide into a one-foot wading pool. Kids of all ages scale Parrot's Perch, firing water cannons across the colorful jungle gym and drenching playmates with buckets of water. Adults can take a relaxing approach to their day at the park and drift down the 300-foot lazy river or soak in the kid-free indoor and outdoor whirlpools.

Out of the water, the play-till-you-win Key Quest Arcade guarantees each gamer a victory on high-profile games, such as Guitar Hero and Dance Dance Revolution. The water park also houses three on-site eateries and a full-service bar.