Most highest mountains are located in the Himalaya and Karakoram ranges, in the border regions of Pakistan, China, Nepal and India. In fact, all 7,000 m peaks in the world are located in Central Asia, in a rectangle edged by Noshaq (7,492 m) on the Afghanistan-Pakistan border in the West, Peak Jengish Chokusu, Tomur Feng) (7,439 m) on the Kyrgyzstan – Xinjiang border to the North, Gongga Shan (Minya Konka) (7,556 m) in Sichuan to the East, and Kabru (7,412 m) on the Sikkim – Nepal border to the South.
Mount Everest is pronounced the highest mountain on Earth, as measured by the height of its summit above sea level. The mountain, which is part of the Himalaya range in High Asia, is located on the border between Nepal and Tibet, China. As of the end of the 2006 climbing season, there have been 3,050 ascents to the summit, by 2,062 individuals, and 203 people have died on the mountain. The conditions on the mountain are so difficult that most of the corpses have been left where they fell; some of them are easily visible from the standard climbing routes.
Climbers are a significant source of tourist revenue for Nepal; they range from experienced mountaineers to relative novices who count on their paid guides to get them to the top. The Nepalese government also requires a permit from all prospective climbers; this carries a heavy fee, often more than $25,000 (USD) per person.
K2 is the second-highest mountain on Earth.Its height is 8,611m. It is located in the Karakoram segment of the Himalayan range, on the border between the Gilgit-Baltistan region of the Pakistan administered Northern Areas and the Taxkorgan Tajik Autonomous County of Xinjiang, China.
Kangchenjunga SewaLungma (Limbu language) is the third highest mountain in the world (after Mount Everest and K2) with an altitude of 8,586 metres (28,169 feet). Kangchenjunga is the highest mountain in India  and the second highest peak in Nepal.
Mount Everest (8,848 m)located in Nepal / Tibet
Lhotse (8,516 m)located in Nepal / Tibet
Makalu (8,485 m)located in Nepal / Tibet
Cho Oyu (8,188 m) located in Nepal / Tibet
Dhaulagiri (8,167 m) located in Nepal
Manaslu (8,163 m) located in Nepal
Nanga Parbat (8,125 m) located in Pakistan
Annapurna I (8,091m) located in Nepal
These are the top ten highest mountains in the world.