Xtreme Waterparks

Longtime friends climb a near-vertical, eight-story raft wall in Veracruz, Mexico, while gym buddies duke it out Down Under on an inflatable obstacle course. And dancers drop like it's hot down a 70-foot slide in Phoenix, Arizona.

Zookeepers rappel down a massive 10-story waterfall near Sydney, Australia while dancers flip upside-down a drop slide in Tlaquiltenango, Mexico. And the Tampa Bay Storm cheerleading team hits a 50-foot raft wall in Florida.

A water park first-timer flies through a 60-foot tornado in Australia while two couples scream up and down the body of a giant snake in the jungles of Guatemala. And close friends flow down a slide that Mother Nature's been working on for eons.

A couple hangs ten down twin drop slides in Palm Springs, California, while identical twins get swept away on a seven-story enclosed waterslide in Sydney, Australia. And newlyweds transform into mermaids in Spring Hill, Florida.

Workout buddies pull themselves over the edge of one of the most terrifying freefall rides in Texas while gorgeous expats take a ride down the longest waterslide in Thailand. And four friends surrender to the gods in Mexico.

Expats go primal at a dinosaur-themed water park in Khon Kaen, Thailand, while friends ride the beast in Santa Claus, Indiana. And international students experience the true power of a sonic shock wave in San Antonio, Texas.

Newbie rafting guides paddle down the Gauley River for the best whitewater rafting in the States. Then, basketball teammates brace themselves for the tallest and longest waterslides in Thailand while sisters plummet down a 245-foot slide in Missouri.

Friends hydroplane down the tallest waterslide in Tennessee, while riders nervously wait to free fall down a six-story trapdoor slide in Thailand. And San Diego transplants muster up the courage to say "yes" to a pitch-black 75-degree drop.

Friends embrace the rage down the West Coast's only 100-foot-high mat racer while friendly adversaries race across an inflatable obstacle course in Myrtle Beach, SC. And brothers plummet down a six-story trapdoor slide in Sandusky, OH.

Model friends try not to scream down dueling 75-foot waterslides in Illinois, while childhood friends hit up the world's only retractable dome water park in Germany. And moms enjoy a day out on a water ride with six intertwined, 300-foot-long tubes.

Couples raft down one of the best whitewater sections in the Rocky Mountains, while childhood friends slide into the belly of the beast in Illinois. And a couple of novices test out a 10-story trapdoor slide at a brand-new park in North Carolina.