

Documentary
The Best Episodes of How Do They Do It? Season 7
Every episode of How Do They Do It? Season 7 ranked from best to worst. Discover the Best Episodes of How Do They Do It? Season 7!

Documentary
The Best Episodes of How Do They Do It? Season 7
Every episode of How Do They Do It? Season 7 ranked from best to worst. Discover the Best Episodes of How Do They Do It? Season 7!
An insider's look at the engineering and scientific miracles behind the things that form the modern world.
Seasons17
Season 7 Ratings Summary
"Underground World, Gunmakers" is the best rated episode of "How Do They Do It?" season 7. It scored 7.1/10 based on 12 votes. Directed by Unknown and written by Unknown, it aired on 6/4/2010. This episode is rated 0.1 points higher than the second-best, "Diggers, Taste Of The Orient, Into The Void".