Adventureplex 1701 Marine Ave, Manhattan Beach, CA90266 Operated by Beach Cities Health District since 2002, this large facility is designed to encourage fitness and learning…More through play for kids and families. Featuring mazes, tunnels, rock climbing walls, ropes courses, an indoor gym and fitness room, the center challenges children physically and intellectually. Stop in anytime for free play, or sign-up for one of the many classes offered. Adults can workout, too, in the gym or basketball courts. For less active time, there is a "homework lounge" with free Wi-Fi where kids can comfortably concentrate on their studies. Your kids can also host a party or attend a camp at the facility. Northrop Grumman employees receive a 10% discount on admission.