Dr Michael Scott takes us on an extraordinary journey through the often invisible treasures of one of the greatest ancient cities in the world, Istanbul. But with many of the secrets of its cathedrals, aqueducts, and the Roman chariot-racing track out of sight or underground, he turns to the latest 3D-imaging technology. The scanning team helps us to see the city as no human eye ever could, peeling back the layers of history, showing how the city has had to reinvent itself over and over through its turbulent past.