Khao Khiao Open Zoo is a popular tourist attraction in Chon Buri that is suitable for a family trip, located in Bang Phra sub-district, Si Racha district, Chon Buri province. It is a big open zoo in Chon Buri province. It is a zoo that has the most area in the world, which is more than 8 square kilometers. It was established in 1978 by reviving the forest conditions of the decayed Khao Khiao with more than 300 types of animals to see. They are mostly in a wide area that is arranged in a condition that is suitable for the characteristics of the animals and tourists can walk around to see the animals closely. There is also animal watching at night.