If you plan to visit the beautiful Blue Mountains near Katoomba (just a 90-minute drive from Sydney), you definitely need to put The Giant Stairway on your to-do list. This remarkable stairway comprises over 800 stairs and walkways, some metal and some hand-hewn out of the cliff face, which rise over 1,000 feet from the Jamieson Valley to the Echo Lookout Point below the famous Three Sisters rock formation. The moderately strenuous walk will reward you with amazing views and you can pack a picnic to enjoy along the way. The good news is that you will not need to climb back up to your starting point – you can jump aboard the historic scenic railway (one of the steepest in the world) to ride back up to the top.