Kathmandu is the capital of Nepal and the largest metropolitan city, the other two sister cities are Patan or Lalitpur and Bhaktapur. The city stands at an elevation of approximately, 1,400 meters in the bowl-shaped valley in central Nepal. The average elevation is 1,350 meters above the sea level. To its south is the Lalitpur sub-metropolitan city, Kirtipur municipality in south-west, Madyapur Thimi municipality in east and different Village Development Committees of Kathmandu in north, west and north-east. The total population of Kathmandu valley is around 5 million. Among urban areas in Nepal, Kathmandu being the premier cultural and economic hub of Nepal is considered to have the most advanced infrastructure.