We went on a tour to the Blue Mountains, about 1.5h drive away from Sydney. It was a bit cloudy, but actually quite comfortable and the view was good, so we enjoyed the vista to the Three Sisters, the valley and the rides with the cable cars, incl. the one with the steepest inclined railway in the world.

The tour also stopped at the Featherdale Wildlife Park, went through the former Olympic village (Olympic Games 2000) and ended with a ferry cruise back to Circular Quay.
