A good book about the biggest cities in our world. It covers every continent and present the city in three two full pages (so six if you follow). The first presenting and overview of the city, the second is for information about the city, historic and cultural, and the third and last one is about the most significant/impressive/popular building of the city. Well done in every aspect, not ideal to read on a Ipad, even a big one, due to the two pages in one landscape orientation which make the text appear really really small and you constantly zoom in and out of it, but in paper it would be a much fun experience. Still worth in whatever the media!