Just finished listening to this. One of the major pluses is that you could listen to anything the author (who narrates the book) says all day long. He just makes everything sound interesting, and his extraordinary skill at choosing words and crafting sentences makes him a distinct pleasure to listen to.
The book itself covers a broad range of historical subjects about the nation's exploration and settlement, and Winchester weaves some of his own experiences in with it, which perhaps only he can pull off. But I really enjoyed it – there was a wealth of information in every chapter and there were only small parts that I'd heard before. I highly recommend it.