The Cage of Death (Australia)
Just 4cm of acrylic, a pair of and a , separate thrill seekers from the jaws of Choppa, a saltwater crocodile. The cage has no bars, unlike cages used in shark dives, which prevent the reptiles from gripping on, but deep tooth scratches are visible on the sides, deterring some hesitant participants. Top End tourists climb into the clear box before being lowered into Choppa's lair. They then spend 15 minutes inside the 9ft high cage and watch Choppa, who lost both front feet while fighting other crocodiles, try to take a bite out of them.
The attraction at Crocosaurus Cove, in the heart of the city of Darwin in the Northern Territory, has been given high marks by adrenaline junkies.
Cliff Base Jumping (Norway)
Iguazu Boat Ride (Argentina & Brazil)
For 15 USD you can take an Iguazu boat ride that will allow you to thumb your nose at the visitors in both countries, as you motor right into the fury of the monstruous falls. Not only will you get absolutely soaked and feel, up close, the power of the falls, but you also get bragging rights, because no matter how you phrase it, the fact that you took a small boat and motored into the dump zone to receive a sheet of water from some of the biggest falls in the world, is undeniably sweet.
Note: In 2011, two US tourists were killed and five people were injured when one of the boats overturned. Seven tourists from the US, Germany and Colombia were sightseeing at Iguazu Falls in northern Argentina with a crew of three when their boat hit rocks and flipped over.
CN Tower Edge Walking (Toronto, Canada)
Walkers who venture out in groups of six are secured with a harness during their 150-metre stroll. The walk opened to the public on Aug. 1 2011 and officials say it has attracted thrill seekers from age 13 to 90.
Volcano Bungee (Chile)
Anyone thinking that throwing themselves into a volcano sounds fun also needs to be fairly well off. You can do this bungee jump as part of a six-day package for $9,995, including and other (slightly less crazy) activities.
El Caminito Del Rey Trekking (Spain)
Kayaking with Whales (Alaska)
While Alaskan sea kayakers have long owned the rights to cool photos of themselves in kayaks with breathtaking panoramas in the background and whale tales in the foreground, this phenomenon is increasing with greater frequency in other parts of the U.S. and the world. What is cooler after all than with a whale? It is almost becoming predictable as to when kayakers will be able to share in this experience, as whale experts are increasingly able to predict the feeding patterns of these truly beautiful marine mammals. While it is quite uncommon for whales to do any damage to humans, it is not out of the question. Their sheer size and weight make an encounter with these gentle giants a dangerous proposition.
Zorbing (New Zeland)
Zorbing is generally performed on a gentle slope, but can also be done on a level surface, permitting more rider control. In the absence of hills some operators have constructed inflatable, wooden or metal ramps.
NOTE: Zorbing was first established in Rotorua New Zealand and has since branched off into different countries like Wales.