The human body, unlike raisins, white wine, and the wit of Oscar Wilde, isn't meant to be dry. Laugh wryly at waves of fun with today’s Groupon: for $15, you get one full-day admission to Mayan Adventure Waterpark at The Waverton Hotel in Elmhurst (a $30 value).

Mayan Adventure Waterpark sends guests sliding through 24,000 square feet of rivers and pools. The expansive indoor park houses a plethora of thrilling slides, from the nail-biting Grand Mayan Falls tube slide to the shriek-inducing Howling Monkey body slide, launching bodies down slopes slipperier than an argument about a camel's nose. Ancient faces carved in stone spout torrents of water on guests drifting gently down the Oogaboo Lazy River, while whitecaps fill the Twisted Lizard activity pool and enliven aquatic games of basketball. Kids can frolic in the soaking meadows of the Parrot Island interactive play station, where a giant dumping bucket in the shape of a Mayan head casts 300-gallon curses upon the heads of those below. A nearby arcade provides respite from the watery jungle with a host of video games and prizes.

With the thermostat hovering at a tropical 82 degrees year-round, Mayan Adventure Waterpark was named the top waterpark in normally weather-ridden Illinois by The Official Best Of list in 2010. A monthly calendar highlights special events including scavenger hunts and game nights, and the park’s many aquatic attractions remain open seven days a week to towel-wielding guests.