AMP had been using their tower building in Circular Quay for around 50 years and it was very much in need of modernising and enlarging to meet their 21st Century requirements. 
‘3xN Architects’ came up with a bold design for a revamped building and Multiplex took on the challenge of delivering the new office space by using a ‘jump start’ approach to the construction.
The old building shell was demolished, but the structure was largely retained and whilst demolition was taking place a new steel tower was built to the North and ‘grafted onto’ the existing concrete skeleton. This approach saved perhaps 18 months of construction time and meant that 2/3 of the old building could be ‘adaptively reused’.
The finished project is a striking addition to Sydney’s skyline and features a series of rotating blocks which cantilever out from the main tower. 
Multiplex should be congratulated for their ingenuity and skill.