Need to get away from it all—including other tourists? Shake up your next vacation with a trip to one of these secret spots that most of the world doesn't know about. We got the inside scoop on 10 hidden destinations from Joe Yogerst, one of the authors of National Geographic's Secret Journeys of a Lifetime: 500 of the World’s Best Hidden Travel Gems ($40). His picks will give even the most seasoned traveler new ideas.