As one would suspect, this is a nonfiction book meant more for the pictures than the words. That said, I found the history of the Louvre to be fascinating, and the masterpieces highlighted include WHY they are considered such as well as how the piece was acquired. Expect a few. . . interesting translation choices since I'm pretty sure this was originally written in French.
I got my hands on the book a few weeks before I got to re-visit Louvre. And it was so nice to walk in there already knowing the history of the building, the surroundings and even recognizing many works of arts that were mentioned and talked about in the book.
I know people mostly go to Louvre, but the book, and the read it. But try the other way around.