From Leura we visited the Jenolan Caves, a protected feature of the UNESCO World Heritage-listed Blue Mountains. Donal kept us amused on the bus with some Irish songs. One in particular was a rendition called "Mabel's ass". He said it was about a donkey belonging to a woman named Mabel but I'm not so sure. He certainly made the trip go faster. The Jenolan limestone karst caves are the world's oldest caves and are significant from both a sightseeing ...

We explored Sydney harbour from the exhilarating seat of a jet boat.  Sydney Harbour is dominated by the Opera House and the Sydney Harbour Bridge.  The bridge was completed in 1932 and links the city centre on the south side of the harbour and the residential north side.  Before it was completed, the only way from one side to the other was by ferry or a 20 km road with 5 bridge crossings.  It took 4000 men 9 years to build it and 16 of them died. It takes...