Bill23 is right to note the anomaly of the entry for Ireland covering the whole island. The corollary is that there is no entry for the United Kingdom, but separate ones for England, Wales and Scotland (just as each has its own international football team. However, the brief introduction ("The Story of the Travel Book") does explain: "It's a book that unashamedly views the planet through the prism of the traveller, focussing on places for their beauty, charm or singularity, even if this does sometimes conflict with defined political or geographical borders."
Note that this is a review of the second edition (2010 Hardback/ 2011 paperback - both with the golden rather than red cover of the first edition in 2005/6) ). Many other reviews (and naturally those that have had time to attract most ratings) are of the first edition. This new edition is entirely revised, with far fewer photographs (817 compared to 1200 in the first edition). The photos are also quite different in the two editions, as is much of the accompanying text. I'm working on a detailed review comparing the two editions.