World's Coolest Zip Lines
Haleakala Skyline Tour, Maui, Hawaii
A father-and-son team launched the Skyline Tour—America’s first zip line—in 2002. The location itself is exhilarating: on the way to the summit of Haleakala Crater, which is thousands of feet above ground and above the clouds. The Skyline’s five zips and swinging bridge pass over forest and hiking trails, and are even certified as a “carbon-neutral” adventure. And there are more zip lines to tackle across Hawaii; on the Big Island, one goes by Akaka Falls. $95.