4. Annapurna Base Camp: Ask any travel agencies in Nepal for best trekking destination, most of them will have one answer Annapurna Base Camp. Go during spring, and you will witness luscious rhododendron forests which gives you majestic feel. Annapurna Base Camp is one of the most popular treks in Annapurna region that takes you to closer to the Annapurna range. It combines so many different landscapes that you perhaps will experience one of the best adventures in your life.