It's time to fly! Zip-lining, the incredible adrenaline-pumping sport where you're harnessed to a pulley and sent to zoom down a wire at gut-punching speeds of 100+mph, is the ultimate insta-thrill. And with rides in beauty spots all over the world, it's also a great way to take in stunning landscapes from a new aerial perspective – assuming you dare to keep your eyes open, of course! Soar over the rainforest canopy in Antigua or through the urban jungle of Las Vegas, zip down over the French Alps or descend underground on a unique tunnel line in Naples. The very bold can even challenge themselves to Puerto Rico's 'The Monster', the longest zip-line in the world, for a screaming rush of exhilaration followed by ultimate bragging rights!