Siblings tackle a crazy twisting tube ride with two head-spinning vortexes in Argentina. Then students bounce over inflatable water obstacles in Australia while friends tube down a hidden river deep in the jungle of Bali.
A husband-and-wife team take on an 85-foot trapdoor slide in Bali while a woman celebrates her birthday swimming with larger-than-life crocodiles in Australia. Then four friends fly down the most extreme rapids that Jamaica has to offer.
Teachers slide into the world's biggest water sphere in Thailand while NYC actors challenge one another to a race on a water slide atop the Carnival Sunshine cruise ship. Then friends get airborne thrills behind a speedboat in Greece.
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.
Newbie rafting guides paddle down the Gauley River for the best whitewater rafting in the US. Then, basketball teammates brace themselves for the tallest and longest waterslides in Thailand while sisters take on 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. San Diego transplants muster up the courage to say 'yes' to a pitch-black 75-degree drop.
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.
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.
From snorkeling in the blue waters of Japan and swimming in the pools below a 260-foot Australian waterfall to retracing the steps of ancient pilgrims to a 1500s abbey in France, we explore the world's most top-secret swimming holes.
From a triple cascade in Fiji, to a dive with great white sharks in South Africa, to a trek through the jungle in Bali, these adventure-seekers crisscross the globe to find the world's best-kept secret swimming holes.
Roller derby teammates go for the gold in Utah, while friends test their mettle walking with sharks in the Bahamas before taking a plunge through their tank. Then, a couple swings like Tarzan on a 34-foot floating adult playground in Texas.
Competitive twins take on the planet's highest rafting challenge in New Zealand, while Ultimate Frisbee teammates in Miami reach ultimate speeds on the fastest waterslide at sea. Finally, two couples get messy on a one-of-a-kind date night in Tampa.
Brothers lose their mind on the Brain Drain in Florida. Then three friends uncover a hidden gem in the rainforest of Puerto Rico, while cruise ship cast members check out the largest water park at sea.
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 ten-story waterfall near Sydney, Australia while dancers flip upside-down on 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.
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.
Hit the secrets spots from the bushland in Sydney, Australia, to waterfalls in Northern California. Later, explore the aptly names Blue Hole in Jamaica and swim with endangered penguins in South Africa.
Search the world's most top-secret swimming holes around the globe from soaking in Australia's bubbly Champagne Pools and Jetblading in Singapore to taking an underground dip in a gorgeous Samoan sinkhole.
Adventure seekers take an excursion across an iceberg-laden lake in Iceland. Then, a couple explores the salmon-colored sands of an island off the coast of the Bahamas, while a group of friends discovers a deserted beach in Mexico.
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. Then, brothers plummet down a six-story trapdoor slide in Sandusky, OH.
Models try not to scream down duelling 75-foot waterslides in Illinois, while childhood friends hit up the world's only retractable dome water park in Germany. And four moms enjoy a day off on a water ride with six 300-foot-long tubes in Indiana.