I have been ti gangtok 2 years ago . Gangtok is the capital of sikkim it is a very beautiful hill station . Gangtok is full of ghats and beautiful enviornment and positive vibes u can visit many places in gangtok like baba mandir and nathula pass where u can see snow even if u go in summer. Nathula pass is border between india and nepal u need to carry your verification id with u . At baba mandir u can see wonderfull mandir of an military officer it is at a great hight so there is lack of oxygen people should carry mediciens form the doctor. It just around 200 or above from NJP railway station it is best hill station I have ver visited