Topping out at 305m, Sydney Tower is the highest building in Sydney. It is designed to resist earthquakes and storms, thanks to a huge water reservoir at the top, which acts as a stabiliser. The turret just below features a revolving restaurant and bar that will enable you to appreciate the 360° panoramic view. A high-speed lift whisks you up to an observation deck at a height of 250m, commanding a view that stretches as far as the Blue Mountains on a clear day.