Whether it's a cruise around the Galápagos Islands, a tree house stay in the Amazon rain forest, or a trek in the Himalayas, nature travel gives you unforgettable sights and experiences.

While hikers can travel Rainbow Falls Trail for its full 6.7 miles to Mount Le Conte, most opt for the 5.6-mile out-and-back hike to its namesake waterfall. Rainbow Falls cascades 80 feet, making it ...