On the eastern side of the Atlantis Resort, the beachfront Atlantis Beach Tower offers easy access to Atlantis' new Aquaventure, a sprawling waterscape of pools, waterslides, and rivers. The Slide Tower has four waterslides in a 120-foot tower: the Abyss (a 50-foot, near vertical drop ending in an underground lair of prehistoric alligator gars), the Drop (which propels riders up the tower via water jets and then down through the Tower's dark center), the Falls, and the Surge. Aquaventure also houses a mile-long river ride and 11 rock climbing walls. With a focus on conservation and education, Dolphin Cay offers programs for interacting with 20 bottlenose dolphins in their own habitat. Guests can also observe more than 50,000 marine mammals at the Altantis' Marine Habitat. Balinese-inspired treatments are available in the two-story Mandara Spa's 35-treatment rooms. An outdoor marketplace, Marina Village, showcases local culture throughout its 20 shops. Additional recreational facilities include 11 lagoons; 13 swimming areas; the Dig, an underground maze of corridors and viewing tanks containing sea creatures; the Mayan Temple's five waterslides; Turtle Beach, a sanctuary for native turtles; an 8,000-square-foot casino; a two-story nightclub; Sports Center, complete with tennis courts; and plenty of watersports. The property's 20 restaurants and bars range from casual fare to gourmet dining with celebrity chefs Bobby Flay, Jean Georges Vongerichten, and Nobu Matsuhisa.The rooms have air-conditioning, satellite TV, sitting areas, balconies, minibars, hairdryers, irons, safes, and dial-up Internet access (fee applies).Check-in is at the Coral Towers. Guests must be 21 years of age and have a valid credit card in the individual's name at time of check-in. Guests under 21 must be with a family or group.