marcus robinson has spent the past years filming. it's to be broadcast later thursday on the u.s. history channel. we have more on this artist's labor of love. >> reporter: towering above the new york skyline is one world trade center. these cinematic images of the rebuilding of the world trade center center are the work of a dedicated film maker, marcus robinson. >> because these images of the towers being destroyed were seen as it was happening around the world, i felt that the rebuilding was an opportunity to make something like an aligorical tale. >> reporter: the construction workers are the stars of robinson's documentary. for eight years, he filmed them day in and day out in all weathers. >> the men and women who are rebuilding the site have a real passion, and they believe that the work they are doing is