Waterfall Gully is a small suburb in the South Australian city of Adelaide. It is located in the foothills of the Mount Lofty Ranges around five kilometres east of Adelaide's central business district (CBD). For the most part, the suburb encompasses one long gully with First Creek at its centre and Waterfall Gully Road adjacent to the creek. At one end of the gully is the waterfall for which the suburb was named. Part of the Burnside Council, it is bounded to the north by the suburb of Burnside, to the north-east by Greenhill, to the south-east by Cleland Conservation Park, to the south-west by Leawood Gardens and to the north-west by Mount Osmond. Waterfall Gully is rich in history and has been a popular attraction since Adelaide's early colonists discovered the area in the nineteenth century. Home to a number of residents and increasingly frequented by tourists, Waterfall Gully has undergone extensive developments in recent years.