World's Best Hikes: A Guide's Guide

Machu Picchu on your bucket list? Take the back way.[slideshow:621]

How about seeing the jagged spikes of Patagonia's Monte Fitz Roy? Hike the shores of nearby Laguna Capri and take in the moutain's reflection in this turquoise alpine lake.

These are two of adventure guide Kasey Austin's favorite hikes in the world—and she knows a thing or two about hiking. As daughter of Austin-Lehman Adventures partner Dan Austin, travel is in Kasey Austin's blood. Since she was six, Austin has traveled extensively in the Americas and Europe, having worn out twelve pairs of hiking boots in the last eleven years.

She now leads tours for Austin-Lehman in Yellowstone National Park, the Tetons, and on Alaska's Kenai Peninsula.