Chiang Mai Zoo and Aquarium is a zoo on Huay Kaew Road, Chiang Mai Province, Thailand, just west of Chiang Mai University. It is the first commercial zoo in northern Thailand, established on 16 June 1977. History In 1950 the US government sent military advisers to train tribal police along the border of Thailand. Among them was Harold Mason Young, son of American missionaries, who had been born in Burma. Young started helping injured animals, and his collection started getting visitors. The Ch…