Where do adventure travel, philanthropy, and 700-thread-count sheets meet?Lots of unexpected—and beautiful—places, thanks to the new alliance between Abercrombie & Kent and the Nature Conservancy. A&K donates a portion of the proceeds from each of its environmental activism tours, which run through November, to the nonprofit organization's programs in different regions. Trips include hikes in Peru, snorkeling in the Galápagos, and a southern-Africa safari with charismatic Nature Conservancy biologist M. A. Sanjayan. 888/785-5379;; tours from $18,700, double.