The world's most enormous machines are stripped down and torn apart to discover their hidden secrets and reveal how each one has changed our world in its own unique way.
Unparalleled access to events never filmed before allow us to dive deep inside these monsters of engineering.
Broadcaster: BBC Two
TX Date: June 2012
Format: 3 x 60
all3media / Empire Media Productions (S1 only)
First up is the Boeing 747, a 200-ton machine that’s broken down into its constituent parts (all 20,000 of them) before being painstakingly reassembled like an over-sized Meccano kit.