It is built on top of a hill between Ranjit and Tatong Rivers. where a Rainbow emanating from mount. Kangchenjunga. Themonastery was built by Pediwangmo during the reign of Chakdar Namgmo 1716 AD. Tashiding Monastery in Sikkim lies on the top of a hill that looms up between the Rathong river and the Rangit river with the back drop of the sacred Mt. Khang-chen-Dzonga. Built in the year 1717 by Ngadak Sempa Chembo during the reign of the third Chogyal Chakdor Namgyal, Tashiding Monastery Sikkim is another important monastery belonging to the Nyingmapa order.There are also many chortans dedicated to some Chogyals and some religious personalities of Sikkim. Carved skillfully on stone plates surrounding the monastery are holly Buddhist mantras like "Om Mane Padme Hum" by the master crafts man Yanchong Lodil. The sacred ceremony of Bumchu is held here at midnight of the 14th & 15th of the first Tibetan month. It is a religious tradition unique to Tashiding