Look Inside Trains by Alex Frith Lift the flaps to discover how trains work, what they do, and where in the world they go. Learn about traditional steam trains- to super-fast bullet trains, trams, and funicular railways. Each page is filled with fun facts about the history of train travel and famous trains and railways from around the world. Hardcover, 14 pages. Recommended for ages 5 to 8 years old.