Start your adventure with a visit to the Tiger Hill, early in the morning to witness the sunrise over the Kanchenjunga mountains. After breakfast, head to the Himalayan Mountaineering Institute to learn about the history of mountaineering in the Himalayas, followed by some tea tasting in Happy Valley Tea Estate. In the evening, take a stroll in the Chowrasta Mall and enjoy the scenic beauty of Darjeeling.
Explore Pelling's natural beauty by visiting the Khecheopalri Lake, Kanchenjunga Falls and Rimbi Waterfalls in the morning. Have some local momos for lunch and visit the Pemayangtse Monastery, one of the oldest monasteries in Sikkim, followed by a visit to Rabdentse Ruins, the second capital of Sikkim. Enjoy the serene sunset from the Sangachoeling Monastery.
Start your day with a visit to the Namgyal Institute of Tibetology, followed by a stroll in the Enchey Monastery. Head to the Gangtok Ropeway to enjoy a bird's eye view of the city and have lunch at MG Road, a popular shopping and eating street. Visit the Tsomgo Lake in the evening and enjoy the yak rides. End your day with a campfire and dinner at one of the many homestays in Gangtok.
Start early in the morning for a visit to the Yumthang Valley, also known as the Valley of Flowers, to enjoy the flower blooms and snow-capped mountains. Have lunch in Lachung and visit the Lachung Monastery and the Shingba Rhododendron Sanctuary in the afternoon. Relax in a hot spring and enjoy a traditional dinner in Lachung.
Head to the Gurudongmar Lake, one of the highest lakes in the world, early in the morning. Have breakfast in Thangu and visit the Chopta Valley and the Chopta Lachung Valley in the afternoon. Enjoy the scenic beauty of the valleys and the mountains and have dinner in Lachen.
Visit the Durpin Monastery and the Zang Dhok Palri Phodang Monastery in Kalimpong in the morning. Have lunch at the famous Morgan House and visit the Deolo Hill and the Cactus Garden in the afternoon. Enjoy the sunset from the Hanuman Mandir and have dinner at one of the many restaurants in Kalimpong.
End your adventure with a visit to the Darjeeling Himalayan Railway, a UNESCO World Heritage site, and enjoy a ride in the famous Toy Train. Visit the Japanese Peace Pagoda and the Batasia Loop in the morning, followed by lunch at the Keventers. Explore Darjeeling's local markets in the afternoon and have dinner at one of the many restaurants in Darjeeling.
Consider visiting the Nathu La Pass, a trading post between India and China, if it is open during your travel dates. A side trip to Ravangla, known for its beautiful monasteries and the Ralang Monastery, can also be added to your itinerary. For maximum fun, try paragliding in Kalimpong or river rafting in the Teesta River. Don't forget to try the local thukpa and chhang.