There will be no garbage trucks on the streets of Australia's newest neighbourhood. No corner store or supermarket. And no traditional air-conditioning. Instead there will be a vast underground engine room pumping sea water through four skyscraping towers to keep residents cool, a cutting edge system of water recycling and solar rooftops that will help make it the country's first carbon neutral suburb.

Welcome to Barangaroo, a place that physically, socially and even in the super-secretive way it is being sold is unlike anything we've seen before. Emerging from a concrete wasteland between Sydney's CBD and Darling Harbour, by the time Barangaroo is complete in 2024 it will be home to 3500 residents.