A great way to visit top attractions is by public transport. Get your family Opal cards and take a ferry, bus or train to Circular Quay, where you'll find some of Australia's iconic attractions - the Sydney Opera House and the Sydney Harbour Bridge.
By using Opal cards on public transport, you'll enjoy daily travel caps and the $2.70 per person Sunday cap. Circular Quay is close to other attractions including the Royal Botanic Garden, perfect for a family picnic by the majestic Sydney Harbour. You can walk from here up to the Art Gallery of NSW.
The Rocks, where Sydney began as a British colony in 1788, is near Circular Quay. Take a walking tour of this historic area and its cobblestoned lanes, have lunch in some of Australia's oldest pubs, and visit the Museum of Contemporary Art Australia, where kids will enjoy interactive displays.
Jump on a ferry from Circular Quay to Darling Harbour and meet koalas and kangaroos at WILD LIFE Sydney Zoo. For an underwater adventure, explore the nearby SEA LIFE Sydney Aquarium and see sharks, seahorses and Pig, the only dugong on display in Australia.
Or take the ferry from Circular Quay to Luna Park, a harbourside amusement park for the whole family. Another fascinating harbour attraction to get to by ferry is Cockatoo Island, part of the World Heritage-listed Australian convict sites. For a family treat, try Cockatoo Island Camping.
Source : https://www.sydney.com