Time Out says
This small, 0.9-hectare nugget just off of Darling Point is a popular picnic spot and wedding destination, but it was once a simple veggie patch. Lieutenant Ralph Clark, who came over with the First Fleet, had tried to set up a little vegetable garden on the island in the 18th century, but other produce-loving settlers kept pinching the fruits – and veg – of his labour.
Island hop? There are no ferries to Clark Island, but you can visit for a picnic ($7 landing fee) – there are tables and toilets – or hire the island exclusively for a function. You’ll have to take your own boat, or a water taxi, and book ahead of time with the Sydney Harbour National Park Information Centre on 02 9253 0880.