The practice's newest office tower in Sydney, Salesforce Tower at Sydney Place, has celebrated a significant milestone with a topping out ceremony, marking the completion of the highest point for the 55-storey building. The tower makes a distinctive contribution to Sydney's skyline with its innovative façade – a series of external cross-braces derived from structural stress diagrams. The south façade is broken into three bays with the concrete cores book-ending the three transparent banks of lifts that animate the façade. The entire elevation is vertically articulated to modulate its visual impact on the skyline.