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​•​​There are 17 nature reserves in the city
•There are 12 river systems that run throughout the city

•There are six million trees in Johannesburg (1.2 million in parks and pavements, and 4.8 million in private homes)

•An amazing 40 percent of the entire world's human ancestor fossils have been found in areas adjoining the city

•Johannesburg has about150 heritage sites, half of which are national monuments

•There are 4 443ha of open veld

•There are 63ha of bird sanctuaries

•There are 87ha of nature trails

•There are 80ha of botanical gardens

•There are 106 dams​