S5 E1 ∙ London's Super Sewer ∙

A multibillion-pound 32km super sewer under the streets of London, an early sewer system at the Palace of Knossos and a piece of tunnel boring equipment from the past.

Series Selector for Impossible Engineering

All episodes for series 5 of Impossible Engineering

S5 E7 · F35

A brand new, revolutionary, fighter aircraft - the F35 Lightning II.