Buxa Fort (Bengali: বক্সা দুর্গ) is located at an altitude of 867 metres (2,844 ft) in the Buxa Tiger Reserve, in the Kalchini CD block in the Alipurduar subdivision of the Alipurduar district in West Bengal, India. It is 30 kilometres (19 mi) from Alipurduar, the nearest town. The King of Bhutan used the fort to protect territory connecting Tibet with India, via Bhutan. During the unrest in the annexation of Tibet by the People's Republic of China, hundreds of displaced persons used the abandoned fort as a place of refuge.