A short intro to the Walter Sisulu Botanical garderns taken from their website:
Against the backdrop of the magnificent Witpoortjie waterfall, this Garden (previously called the Witwatersrand National Botanical Garden) covers almost 300 hectares and consists of both landscaped and natural veld areas. The history of the Garden shows that it was founded in 1982, but has been a popular venue for outings since the 1800's.
The natural vegetation of the area is known as the "Rocky Highveld Grassland" and consists of a mosaic of grassland and savanna, with dense bush in kloofs and along streams. The variety of habitats accommodates over 600 naturally occurring plant species.
A breeding pair of majestic Verreaux's Eagles nest on the cliffs alongside the waterfall. The Garden is home to an abundance of wildlife. Together with the other 220 bird species, there are also a number of reptile and small mammals, including small antelope and jackal, which occur naturally in the Nature Reserve.
Several short walks run through the Garden and the surrounding natural areas. The JCI Geological Trail gives visitors the opportunity to not only walk along the Roodekrans Ridge and in the Nature Reserve portion of the Garden, but also to learn something about the fascinating geology of the area. Guided tours can be arranged for groups.