Visitors who are not citizens of India must obtain an Inner Line Permit (ILP) to enter Sikkim. Each guest must have photocopies of their passport and Indian visa along with the original documents and 2 recent passport-sized photos to receive the permit. Guests can submit these documents at Melli and Rangpo entry checkpoints, Bagdogra Airport's Sikkim Tourism Booth, and Sikkim House in Kolkata or Delhi.