This discovery-minded travel company prides itself on consistently attracting return travelers and we totally get why: Groups are never more than 16 people deep and are often tag-teamed by a designated trip leader and knowledgeable locals. Along the way, depending on destination, you’ll stay at fine hotels, quaint B&Bs, and luxe tented camps. Itineraries vary from classic Galapagos Island sailing excursions on small yachts, to once-in-a-lifetime tribal expeditions where you’ll get to stay in remote villages, spend quality time with a hunting-and-gathering community, and explore game reserves.