In the 1950 Harold Mason Young, son of American missionaries, started rescuing and caring for injured animals, and his collection started getting visitors. Hence the birth of the zoo, when the Chiang Mai government donated 24 acres to aid in his efforts. The zoo has grown to over 200 acres now, and houses a large variety of animals, and boasts two aquariums. The marine aquarium is the largest in Asia, and they also have one of the very rare giant pandas every born in