The USA's railroads are as spectacular as they are varied, and this picturesque journey will take you to the most scenic train watching destinations in America. First, you'll climb aboard the CSX mainline in Sand Patch Pennsylvania, which carries you through the golden autumn splendor of the Alleghenies. At the spectacular lookout near Altoona, Pennsylvania's Horseshoe Curve, you'll come as close as you can to working freight trains when you watch them transverse the idyllic countryside. After a profile of the varied Amtrak services available across the nation, you'll then step into the hustle and bustle of Chicago's rail yards, where train lines from across the nation meet. The Rockies will then prove to be a formidable backdrop for the Denver & Rio Grande mainline, which you'll see withstanding the harsh Colorado winters. Your final stop will be California's Cajon Pass, perhaps the single most spectacular train watching spot in the USA.