Hi Amna. This is @iamdeepakdeepu/Instagram.
I have recently done a road trip to NorthEast Himalayas i.e., Sikkim. If you want the best adventures just travel to Lachen for freezing temperatures. You can visit Gurudongmar lake 17,500 feet to experience the altitude sickness with hundreds of feet deep valleys, vertical roads, landslides and for freezing water with beautiful snowy landscapes. For total trip enquiry you can directly message me if you have any doubts about permissions. Lot of agents will be there to suck tourists money from pockets. So be careful. Cheers
yumthang valley( Valley of flowers)
Tsomgo lake This is totally the north sikkim part...i recommend u to travel this part first because its really beautiful and thrilling... u can check my profile i published how to travel in Sikkim
You can book a 3 day North Sikkim tour from anywhere near the main market. The trip cost me 3000/- in May 2017 including food, travel & lodging. I had to travel along with other tourists in a Bolero. Total 10 people. We visited Lachen, Yumthang, Zero Point, Lachung, Gurudongmar Lake. Each of these places are absolutely breathtaking!