Zip lines are the ultimate form of hybrid travel, combining flight's scenic altitudes, vine swinging's leafy surroundings, and the wire-guided movements of marionette puppetry. Sample new forms of locomotion with today's Groupon: for $64, you get a five-hour, 14-zip-line Ultimate Zip Adventure over Wolfe Creek and Coldwater Creek at Adventures Unlimited in Milton, Florida (a $129 value).

The zip-line guides at Adventures Unlimited helm airborne sightseeing excursions through the longleaf-pine-populated forests of northern Florida. After hiking through topographically diverse terrain, adventurers scale stairs to the start tower and launch into the open air, where continuous forward movements finally confirm all paparazzi-fueled rumors about gravity. Zip liners take in the dizzying sequence of sights as they fly over Wolfe Creek and Coldwater Creek. Forgotten feet get in on the adventure as they traipse across two sky bridges, which double as two-way portals to the Great Wall of China. Zip-line tours are available Thursday through Sunday with a two-person minimum, and Monday through Wednesday with a four-person minimum.