Xi’an is a huge store house of diverse floral and faunal species. With huge and open parks and gardens, Xi’an portrays picturesque image for all its travellers. Mount Cuihua National Geological Park, Chanba National Wetland Park, Hei He National Forest Park are some of the beautiful open spaces of this place. Xingqing gongyuan has a huge open space and boasts of being Xi’an’s premier park. Xi'an Botanical Garden covers an area of 20 hectares. This garden boasts of being one of the eight earliest botanical gardens here. It is also a source of research and technology. Based on their purpose, trees are categorised and planted.