Hanging off a zipline while you soar through the air is a great experience, but it's often just a straight-line run, and can rarely compare to the thrills you get on a roller coaster. So a bunch of enterprising Aussies had the brilliant idea to combine the two, creating the world's longest zipline that has you zig-zagging and looping your way through the treetops.
You still hang from the TreeTop Crazy Rider in a safety harness like you would on a traditional zip line, but instead of gliding along a taut straight cable you actually follow a twisty curvy track that's suspended -- as high as 18m in some places -- from the very trees you're whizzing past.
Located just north of Sydney in the Ourimbah State Forest, the 1km run is the longest continuous zipline ride in the world, and it takes riders about five minutes to work their way from the beginning to the end. You'll definitely want to take it all in during your ride though, because a one-way trip is a hefty $US75. [TreeTop Crazy Rider via Thrillist via Daily Telegraph]