Kathmandu is the capital and largest metropolitan city of Nepal.
The city is the urban core of the Kathmandu Valley in the Himalayas, which also contains two sister cities namely Patan or Lalitpur, 5 kilometres (3.1 mi) to its southeast (an ancient city of fine arts and crafts) and Bhaktapur, 14 kilometres (8.7 mi) to its east (city of devotees). It is also acronymed as 'KTM' and named 'tri-city'. Kathmandu valley is only slightly smaller than Singapore in terms of area.
The city stands at an elevation of approximately 1,400 metres (4,600 ft) in the bowl-shaped valley in central Nepal surrounded by four major mountains, namely: Shivapuri, Phulchowki, Nagarjun and Chandragiri. It is inhabited by 949,486 (2009) people.
The Kathmandu valley with its three districts including Kathmandu District accounts for a population density of only 97 per km2 whereas Kathmandu metropolitan city has a density of 13,225 per km2. It is by far the largest urban agglomerate in Nepal, accounting for 20% of the urban population in an area of 5,067 hectares (12,520 acres) (50.67 square kilometres (19.56 sq mi)).