This is a nonfiction book with visual appeal, as it has great photographs,

colorful format, captions, vocabulary and the usual index, web sites, and important facts.  One aspect that is unique about this book, is the varied reading level.  The main narration is in a large size font with mostely easy to read wording.  The captions are in a smaller size font with more complicated vocabulary.  This would make for a great book for an adult and child to read together.  Great addition to a library.  Recommended.