Dro-dul Chorten is a stupa in Gangtok built by Trulshik Rinpoche, head of the Nyingma order of Tibetan Buddhism in 1945. Inside this stupa, a complete set of Dorjee Phurba, Kangyur relics (Holy Books) and other religious objects.
Around the stupa are 108 Mani Lhakor or prayer wheels. The stupa is surrounded by Chorten Lakahang and Guru Lakhang, where two statues of Guru Rinpoche are present.
The Chorten was recently in news for the micaculous water dipping from its top on a clear sunny day.