- NaN/10(0 votes)
#1 - Adventure Machines
Loading...S21:E10 CommentsView allDirector:N/AWriter:N/A - NaN/10(0 votes)
#2 - Heavy Machinery
Loading...S21:E20 CommentsView allDirector:N/AWriter:N/A - NaN/10(0 votes)
#3 - Moving America
Loading...S21:E30 CommentsView allDirector:N/AWriter:N/A - NaN/10(0 votes)
#4 - Power Tools
Loading...S21:E40 CommentsView allDirector:N/AWriter:N/A


Documentary
The Best Episodes of Modern Marvels Season 21
Every episode of Modern Marvels Season 21 ranked from best to worst. Discover the Best Episodes of Modern Marvels Season 21!

Documentary
The Best Episodes of Modern Marvels Season 21
Every episode of Modern Marvels Season 21 ranked from best to worst. Discover the Best Episodes of Modern Marvels Season 21!
HISTORY’s longest-running series moves to H2. Modern Marvels celebrates the ingenuity, invention and imagination found in the world around us. From commonplace items like ink...
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Season 21 Ratings Summary
"Adventure Machines" is the best rated episode of "Modern Marvels" season 21. It scored N/A/10 based on 0 votes. Directed by N/A and written by N/A, it aired on 7/25/2021. This episode is rated NaN points higher than the second-best, "Heavy Machinery".