Cockatoo Island is the largest island in Sydney Harbour, located at the junction of the Parramatta River and the Lane Cove River. This is the main entrance from the ferry wharf, which sits alongside the administrative building. The island was originally heavily timbered in red gums which attracted many sulphur-crested cockatoos. Cockatoo Island has been the site of a prison, reformatory, industrial school and shipyard. The heavy industry ceased in 1992 when the shipyard closed and ten years later it became a major venue for art exhibitions and festivals.