The Waterfall Gully Restaurant was constructed between 1911 and 1912 by South Australian architects Albert Selmar Conrad and his brother Frank , and was formally opened by Sir Day Bosanquet on 9 November 1912 . Built in the style of a Swiss chalet , the building have been heritage listed since 1987 , and is reputedly haunted by the ghost of a firefighter who died from burns suffered in 1926 .