You need permit and TIMS card ( Tourist Information Management System),photocopy of passport,photocopy of travel insurance paper  and 4 photographs of standard size  to visit government reserved areas like  Annapurna Conservation Area,Sagarmatha National  Park, Langtang Wildlife reservation  , Rara  National Park, Manaslu  Conservation Area ,Kanchanjungha , Makalu Barun Valley Area, Shivapuri National Park.