In the series of the regional books on the historical sites of Ladakh, the third volume Historical Sites of Zanskar is an effort to identify and comprehensively document the historical sites of Zanskar, the southernmost region of Ladakh, where the discipline of modern Tibetology is considered to have been formed. It is in Zanskar that the Hungarian scholar Alexander Csoma de Koros resided in 1823-1824, in order to study the Tibetan language, which resulted in the writing of the first distributed Tibetan dictionary. The present survey of Zanskar brought to light nearly two hundred seventy historical sites covering monasteries, forts, chortens (stupas), petroglyphs, Buddhist carvings, temples, caves, etc. The site survey and documentation was carried out by Dr Quentin Devers, a researcher at the French National Centre for Scientific Research (CNRS) within the Research Centre for East Asian Civilizations (CRCAO), Paris.