Milson Island or Rabbit/Peat Island at Brooklyn adjacent to the Freeway Dan. Excellent fishing.
These days Milson Island is administered by the NSW Department of the Arts, Sport and Recreation and accommodates up to 170 schoolchildren or corporate types for bonding retreats; for most of last century, however, it was used as a mental asylum and a prison.
Not far downriver, near the freeway, is Peat Island, formerly known as Rabbit Island, where a psychiatric hospital was established in 1911. For decades the facility housed "inebriates" and the criminally insane; two years ago the NSW Government announced it would be redeveloped into village-style accommodation for the elderly.