With technologies constantly progressing, the methods being used for urban planning and design are changing, with 3D modelling and simulation being widely used to help us with development. These technologies are changing the scope for urban planners, by providing them with the ability to model their ideas and foresee outcomes. Joining us on the line to discuss these technologies, and the associated benefits and challenges, was Yan Liu, Associate Professor in the school of earth and environmental sciences, at the University of Queensland.