We've just returned home from a couple of days in the Blue Mountains and if you're looking for a quick and easy getaway this is a great option. We just jumped on the M1 south for 3 hours and were there. First stop was lunch at the Gingerbread House where the kids were able to decorate gingerbread cookies or a gingerbread house. Then we went to Echo Point to look at the Three Sisters. When I wasn't worried that my kids would climb a fence, it was truly beautiful and I'm pretty sure even the little ones appreciated it, yelling that they did look like sisters!
The next day we went to Scenic World and that was a heap of fun. They have a glass bottomed cableway which the kids thought was amazing. Then the fast, steep train was a big hit with everyone. Another walk and we travelled back on another cable car to the top.
I'd recommend this to families, despite the cold we really enjoyed our time together. Australia is truly an amazing place!