Sydney: Royal Botanic Gardens (To do)

Wonderful and for free. Open till 4 pm you can have a walk, do jogging have sunbath, see rare plants or that are not in Europe.

For those not expert a 2 hours walk is enough. You can be surprised by the presence of flying foxes, bigger than bats and not irritated by the sun, tehy are a problem for Sydney as much as the bigeons are for Italy. Don't worry: they are innocuous.