Nepal is a living museum that people cannot resist to explore. Nepal is situated between two giant countries India in the east, west and south and China in the north. Being small in area of 147,181 sq. km. also, Nepal is one of the richest countries in the world in terms of bio-diversity due to its unique geographical position and altitudinal variation. The elevation ranges from 60 m above sea level to the highest point on earth, Mt. Everest at 8,848 m, all within a distance of 150 km resulting into climatic conditions from Sub-tropical to Arctic. The unique variation has given Nepal a varied ecosystem, thick tropical and alpine forests swarmed with diverse wildlife, great peaks of the world, frozen valleys, deep gorges, mysterious canyons, fast and furious rivers, running hills and cool and calm lakes.