Namgyal Institute of Tibetology (NIT) is a Tibet museum in Gangtok, Sikkim, named after the 11th Chogyal of Sikkim, Sir Tashi Namgyal. The institute is involved in the research work to document the social history of various monasteries of Sikkim.
Do-drul Chorten is a stupa located near to the Namgyal Institute. It was built by Trulshik Rinpoche, head of the Nyingma order of Tibetan Buddhism in 1945. The stupa is marked by a golden top with a deity enshrined on it. Inside this stupa is a complete set of Dorjee Phurba, Kangyur and other religious objects. Around the stupa are 108 Mani Lhakor or prayer wheels.