The Best Seasons of The Machines That Built America

Every season of The Machines That Built America ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of The Machines That Built America!

The stories behind innovations such as TV, radio, phones, airplanes, motorcycles and power tools as well as the inventors including Nikola Tesla, William Harley, Alexander Graham Bell, Duncan Black and Alonzo Decker.