Heirisson Island

Heirisson Island is an artificially created island in the Swan River in Western Australia at the eastern end of Perth Water, within the suburb of East Perth. It occupies an area of 285,600 square metres, and is connected to the two foreshores by the Causeway and Boorloo Bridge. The next upstream island is Kuljak Island, then Ron Courtney Island, with no islands in the Swan River downstream between... (Wikipedia)