This guide should inspire you visit all these wonderful places or at least put them on your dream bucket list. Alternatively, the book could be a bible or dictionary by providing useful information for each site. Unfortunately, this books falls short, it reads and feels like being provided by an government organization.
On the plus side, the guide lists all sites, provides great pictures, and some maps to easily locate the sites. Two decisions by the publisher, however, make this book a bit cumbersome to read. First, all sites are organized based on the year when the status of UNESCO Heritage site was conferred such that sites of the same country are distributed throughout the book....but who cares about when the Historic Centre of Salzburg was made UNESCO World Heritage site? I would like to see either all sites from the same country grouped together in one chapter, or all sites of similar type (e.g., ancients cities, natural phenomenon) grouped by some kind of logical bundling that makes scrolling through the thick book fun and entertaining. Second, the descriptions of the sites vary in quality and depth: sure, this cannot be totally avoided given how many sites there are, but somehow many descriptions did not make the sites come to life or were convincing about the importance of the site. Finally, while I understand that everybody can just go search online for any site to get more information, it would be helpful if an appendix would list the official websites for all sites, just to make it easy to get started on exploring more.
In sum, the book is gives you an overview over all sites, but not much more.