In the morning, visit the Namgyal Institute of Tibetology to learn about the region's Buddhist culture and history. In the afternoon, head to the Flower Exhibition Centre to see a variety of local and exotic flowers. In the evening, go for a walk along MG Marg, a pedestrian-only street lined with shops, restaurants and bars.
Start your day early and drive to Tsomgo Lake, a glacial lake located at an altitude of 12,400 feet. Spend the morning taking in the stunning views and taking a yak ride around the lake. In the afternoon, head to the nearby Baba Mandir, a temple dedicated to an Indian army soldier. Return to Gangtok in the evening for a relaxing evening.
Leave early in the morning and drive to Pelling, a town known for its stunning views of the Himalayas. Visit the Pemayangtse Monastery, one of the oldest monasteries in Sikkim, and then head to the Rabdentse Ruins, which was the second capital of the Sikkim Kingdom. In the evening, visit the Khecheopalri Lake, a sacred lake surrounded by forests. Return to Gangtok in the evening.
Consider visiting the Rumtek Monastery, which is one of the largest and most significant monasteries in Sikkim. You can also take a side trip to the Nathula Pass, a mountain pass on the India-China border. To maximize your fun, try the local cuisine, including dishes like momos, thukpa, and gundruk. Finally, make sure you have a good pair of walking shoes and warm clothes, as the weather can be unpredictable.