Going down...Perch on top of a skyscraper with the Stickmen then descent to street level and below to see the layers of a city - some are smellier than others!
Land at helipad city
Visit a rooftop fairground
Ride in a double-decker underground metro
View a fatberg in a sewer
The Stickmen unveil the hidden systems that keep a city running lit up networked and clean and juggle fascinating facts and extreme figures. So what does happen when you flush the loo...?