Each book in the "Insights" series provides children with a broad range of topics in history, natural history and science. Six pages with fold-out flaps allow children the opportunity to discover historical facts or animal physiology, such as the exact movement an animal makes when it runs, jumps, flies or crawls. This volume explores the lives of the Vikings, describing what they ate, how they traded, their mastery of sailing craft and their hierarchy. Individual warriors and explorers of renown are mentioned, as is the demise of their empire.