Discover the secret systems that keep the world's most crowded, complicated and chaotic cities on the move. From transport and engineering to food and trade, this series highlights the logistical and social challenges faced by our most iconic megacities.
Find out how Mexico City keeps its inhabitants safe from earthquakes and volcanoes, and meet local people who offer an inside look at life in metropolises like Delhi and Hong Kong.
Meanwhile, Moscow's incredible architecture shows that the world's busiest cities also have some of the richest histories.
| CHANNEL |
BBC Earth (DStv 184) |
| PREMIERE |
15 October 2017 |
| TIMESLOT |
Sundays, 17h00 |
| REPEATS |
Saturdays, 23h55
Fridays, 19h30 |