With great acting, a sensational script, and ground-breaking cinematography, Ben Hur is clearly a masterpiece. But even more impressive than those things was its massive scale. There were 10,000 extras, 100 wardrobe technicians and more than 400 pounds of human hair used to fabricate fake beards. But these all pale in insignificance in contrast to the film’s 300 sets, which extended over 148 acres and nine sound stages. Made using a million pounds of plaster, 40,000 cubic feet of lumber, and countless carpenters and artists, they were the most expensive and largest sets ever made. Over 1,000 workers constructed the stadium out of a rock quarry which cost more than $8 million in today's dollars.