Get a rush of adrenaline without putting yourself in actual danger. Zip lining is a perfect way to have the best of both worlds. This is one of those adventure activities that is on almost everyone’s bucket list when they travel to this country. Puerto Rico is home to the longest zip line in the world, it is the length of 28 football fields and you reach speeds of up to 95 miles per hour. And, if getting your heart racing during the day isn’t exciting enough...try zip lining by moonlight to take your adventure to a new level.