Trekking in Nepal is one of the best destinations among the best countries to trek in the world. Nepal has the best possibilities because of its unique geography, animal kingdom, and ethnic group. Holidays in Nepal are the experience of more than 124 different languages and indigenous traditional practices. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain, bordering Tibet of China to the north, India in the south, and east, and the Indian state of Sikkim. Nepal has a diverse geography, including fertile plains, subalpine forested hills, and eight of the world's ten tallest mountains, including Mount Everest, the highest point on Earth. Nepal is a multi-ethnic, multi-lingual, multi-religious, and multi-cultural state, with Nepali as the official language. Kathmandu is the nation's capital and the largest city.

Nepal is divided into three principal physiographic belts known as Himal–Pahad–Terai. Himal is the mountain region containing snow and situated in the Great Himalayan Range; it makes up the northern part of Nepal. It contains the highest elevations in the world including 8,848.86 meters (29,032 ft) height Mount Everest (Sagarmāthā in Nepali) on the border with China. Seven other of the world's "eight-thousands" are in Nepal or on its border with Tibet: Lhotse, Makalu, Cho Oyu, Kangchenjunga, Dhaulagiri, Annapurna, and Manaslu. Pahad is a mountain region that does not generally contain snow. The mountains vary from 800 to 4,000 meters (2,600 to 13,100 ft) in altitude, with a progression from subtropical climates below 1,200 meters (3,900 ft) to alpine climates above 3,600 meters (11,800 ft). The Lower Himalayan Range, reaching 1,500 to 3,000 meters (4,900 to 9,800 ft), is the southern limit of this region, with subtropical river valleys and "hills" alternating to the north of this range. Population density is high in valleys but notably less than 2,000 meters (6,600 ft) and very low above 2,500 meters (8,200 ft), where snow occasionally falls in winter. The southern lowland plains or Terai bordering India are part of the northern rim of the Indo-Gangetic Plain. Terai is the lowland region containing some hill ranges. The plains were formed and are fed by three major Himalayan rivers: the Koshi, the Narayani, and the Karnali as well as smaller rivers rising below the permanent snowline. This region has a subtropical to tropical climate. The outermost range of the foothills called Sivalik Hills or Churia Range, cresting at 700 to 1,000 meters (2,300 to 3,280 ft), marks the limits of the Gangetic Plain. Broad, low valleys called Inner Terai Valleys (Bhitri Tarai Upatyaka) lie north of these foothills in several places.

Nepal contains a disproportionately large diversity of plants and animals, relative to its size. Nepal, in its entirety, forms the western portion of the eastern Himalayan biodiversity hotspot, with notable biocultural diversity. The dramatic differences in elevation found in Nepal (60 m from sea level in the Terai plains, to 8,848 m Mount Everest) result in a variety of biomes. The Eastern half of Nepal is richer in biodiversity as it receives more rain, compared to the western parts, where arctic desert-type conditions are more common at higher elevations. Nepal is a habitat for 4.0% of all mammal species, 8.9% of bird species, 1.0% of reptile species, 2.5% of amphibian species, 1.9% of fish species, 3.7% of butterfly species, 0.5% of moth species and 0.4% of spider species. In its 35 forest types and 118 ecosystems, Nepal harbors 2% of the flowering plant species, 3% of pteridophytes, and 6% of bryophytes.

The greater one-horned rhinoceros roams the sub-tropical grasslands of the Terai plains. Nepal's forest covers 40.36% of the country's total land area, with an additional 4.38% of scrubland, for a total forested area of 44.74%, an increase of 5% since the turn of the millennium. The country had a 2019 Forest Landscape Integrity Index mean score of 7.23/10, ranking it 45th globally out of 172 countries. In the southern plains, the Terai savanna and grasslands ecoregion contains some of the world's tallest grasses as well as Sal forests, tropical evergreen forests, and tropical riverine deciduous forests. In the lower hills (700 m – 2,000 m), subtropical and temperate deciduous mixed forests as well as subtropical pine forests dominated by pine. The middle hills (2,000 m – 3,000 m) are dominated by oak and rhododendron. Subalpine coniferous forests cover the 3,000 m to 3,500 m range, dominated by oak (particularly in the west), Eastern Himalayan fir, Himalayan pine, and Himalayan hemlock; rhododendron is common as well. Above 3,500 m in the west and 4,000 m in the east, coniferous trees give way to rhododendron-dominated alpine shrubs and meadows. Content of Natural and cultural environment many travelers are seeking to spend their Holidays in Nepal. The people of Neal are very nice and smiling, people are always welcoming and hardworking.