Darjeeling is a part of the Eastern Himalayan zoo-geographic zone.Flora around Darjeeling comprises sal, oak, semi-evergreen, temperate and alpine forests. Dense evergreen forests of sal and oak lie around the town, where a wide variety of rare orchids are found. The Lloyd’s Botanical Garden preserves common and rare species of plants, while the Padmaja Naidu Himalayan Zoological Park specialises in conserving and breeding endangered Himalayan species.
Kalimpong is a hill station in the Indian state of West Bengal. It is located at an average elevation of 1,250 metres (4,101 ft).The town is the headquarters of the Kalimpong subdivision, a part of the district of Darjeeling. The Indian Army’s 27 Mountain Division is located in the outskirts of the town
Gangtok is a municipality, the capital and the largest town of the Indian state of Sikkim. It also is the headquarters of the East Sikkim district. Gangtok is located in the eastern Himalayan range, at an altitude of 1,650 m (5,410 ft). The town’s 100 thousand population belongs to different ethnicities such as Nepali, Lepchas and Bhutia.