The country can be divided into three main geographical regions:

Himalayan Region
The altitude of this region ranges between 4877 meters and 8848 meters with the now line running around 488848 meters. It includes 8 of the existing 14 summits in the world which exceed the altitude of 8000 meters. They are: (1) Sagarmatha (Mt. Everest) - 8848 m (2) Kangchenjunga - 8586 m, (3) Lhotse - 8516 m, (4) Makalu - 8463 m, (5) Cho Oyo - 8201 m, (6) Dhaulagiri - 8167 m, (7) Manaslu - 8163 m, and (8) Annapurna - 8091 m.

Hilly Region
This region accounts for about 64 percent of total land area. The Mahabharat range that rises up to 4877 meters forms it. To its south lies the lower Churia range whose altitude varies from 610 meters to 1524 meters.

Terai Region
The lowland Terai region, which has a width of about 26 to 32 kilometers and an altitude maximum of 305 meters, occupies about 17 percent of total land area of the country. Kechanakawal, the lowest point of the country with an altitude of 70 meters lies in Jhapa District of the eastern Terai.

All this adds up one interesting fact that there is no seasonal constraint on traveling in and through Nepal. Even in December and January, when the winter is at its severest, there are compensating bright sun and brilliant views. Winter days often begin in mist, which can last until noon. Then suddenly, as if by magic, the fog disappears bringing in to views snowy peaks, glistening white and fresh against the large blue sky.