Photo: GetYourGuideFor the ultimate Himalayan thrill, this helicopter tour flies deep into the Everest region and touches down at a high viewpoint such as Kala Patthar or Everest View, putting you face to face with the worlds highest mountains. It is a once-in-a-lifetime alternative to the two-week trek, complete with hotel transfers. Numbers are small, so the experience feels intimate. Book well ahead in peak season, go early for stable weather, and take it easy on landing as the altitude is serious.