Hey Ula guidesAustralia travel guidesHomeGuidesOceaniaAustraliaOpal child caps, harbour ferries and zoo days that start from Circular Quay.New South WalesFamily travelSydney · With kidsSydney with kids: things to doA sourced first Sydney stay: Opal child caps, Taronga by ferry, free Burra at the Australian Museum and the Darling Quarter playground.