6 episodesFirst aired 26 October 2012
E1Oct 201245m
Ancient City: Rome
E2Nov 201245m
E3Nov 201245m
E4Nov 201245m
Sydney is home to a fifth Australia's entire population and is trapped between the Blue Mountains and the ocean, sitting on the driest inhabited continent on Earth, and surrounding one the planet's largest natural harbours. This episode uncovers what is inside Sydney's buildings and beneath its streets that allow the city to function - from the concealed contours of the harbour that allow super-sized ships to sail into the heart of the city, to the underground caverns that store its water.
E5Nov 201245m
E6Nov 201245m