Hi Sutanu, Some offbeat places in Sikkim are
Heritage Tourism Bermiok.
Nature Borong. Chayatal is Chaya Lake. Dzongu.
Kitam Bird Sanctuary.
Tashiding. Rawangla Amidst in the Hills of Meanam
Uttarey Village Surrounded by Mountains.
Historical and Oldest Yuksom
If you are taking a 2nights/3days package for North Sikkim from Gangtok, be sure to pay for the additional attractions like Zero Point and Kalapaththar. These places are the most beautiful in this route, and worth a visit.