Most of international travelers who come to Tibet at the first time take a short Lhasa tour and visit the landmarks: Potala Palace, Jokhang Temple and the “Great Three Monasteries of Gelugpa” - Sera Monastery, Drepung Monastery and Ganden Monastery.
If you come to Tibet not only for Buddhist culture but also for natural scenery, you shouldn’t miss Namtso Lake, Yamdrok Lake, and Mount Everest, even the depth sites like Mount Kailash and Mansarovar Lake.