Not much is known about the early history of Gangtok. The earliest records date from the construction of the hermitic Gangtok monastery in 1716.
Gangtok remained a small hamlet until the construction of the Enchey Monastery in 1840 made it a pilgrimage center. After the defeat of the Tibetans by the British, Gangtok became a major stopover in the trade between Tibet and British India at the end of the 19th century. Most of the roads and the telegraph in the area were built during this time.