This impressive bridge is not far from the Lennox Bridge that we featured yesterday, but is much less well known. It is the Knapsack Viaduct at Lapstone, at the base of the Blue Mountains west of Sydney. It was completed in 1867 and served initially as a rail bridge.
It then became part of the Great Western Highway, but is now just used by walkers and cyclists since the highway has been rerouted. It gives an odd sensation that you should look over your shoulder, just in case some lost motorist is hurtling along behind.