LhasaLhasa ('lɑːsə; Lhasa dialect: /l̥ɛː˥˥.sa˥˥/; ) is the urban center of the prefecture-level Lhasa City and the administrative capital of Tibet Autonomous Region in southwest China. The inner urban area of Lhasa City is equivalent to the administrative borders of Chengguan District (), which is part of the wider prefectural Lhasa City. Lhasa is the second most populous urban area on the Tibetan Plateau after Xining and, at an altitude of , Lhasa is one of the highest cities in the world.
KathmanduKathmandu, officially Kathmandu Metropolitan City, is the capital and most populous city of Nepal with 845,767 inhabitants living in 105,649 households as of the 2021 Nepal census and 2.9 million people in its urban agglomeration. It is located in the Kathmandu Valley, a large valley in the high plateaus in central Nepal, at an altitude of . The city is one of the oldest continuously inhabited places in the world, founded in the 2nd century AD.
SikkimSikkim (ˈsɪkᵻm; ˈsikːim) is a state in northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Koshi Province of Nepal in the west, and West Bengal in the south. Sikkim is also close to the Siliguri Corridor, which borders Bangladesh. Sikkim is the least populous and second smallest among the Indian states. Situated in the Eastern Himalaya, Sikkim is notable for its biodiversity, including alpine and subtropical climates, as well as being a host to Kangchenjunga, the highest peak in India and third highest on Earth.
TibetTibet (tᵻˈbɛt; Böd; ) is a region in the central part of East Asia, covering much of the Tibetan Plateau and spanning about . It is the homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as the Monpa, Tamang, Qiang, Sherpa and Lhoba peoples and, since the 20th century, considerable numbers of Han Chinese and Hui settlers. Since the 1951 annexation of Tibet by the People's Republic of China, the entire plateau has been under the administration of the People's Republic of China.