For every young train fan, this book is CRAMMED full of fascinating facts about the world's biggest, longest, heaviest and fastest trains. From modern high-speed Maglev trains to historic Big Boy locomotives, this book explores some of the most impressive (and GIGANTIC) trains that have ever been built. Each page has either two giant folding flaps, to reveal more trains underneath, or a 4-page-concertina-fold pull-out, to reveal the LONGEST trains from around the world.