Sydney: Urban structure

https://en.wikipedia.org/wiki/Sydney#Urban_structure

http://www.ndy.com/news-events/project-news/westconnex-twin-tunnel-design-deliver-enormous-upside-economy

https://www.google.ca/search?q=sydney+australia&espv=2&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwif4v_3werJAhVW9mMKHew6D8oQsAQIPw&biw=2133&bih=1078&dpr=0.9