In the late nineteenth century, as America’s largest cities grew dangerously congested, the time had come to replace the nostalgic horse-pulled carriages clogging the streets with a faster, cleaner, safer form of transportation. Ultimately, it was Boston—a city of so many firsts—that overcame a litany of engineering challenges, the selfish interests of businessmen, and the great fears of its citizenry to construct America’s first subway. THE RACE UNDERGROUND tells the dramatic story of an invention that changed the lives of millions. Co-Presented with First Look, WGBH’s premier showings of its highly acclaimed new films. Image source: American Experience