We first bought the book on France ten or more years ago when we were regularly taking holidays in France with the kids. We've subsequently bought editions for many different countries, the latest being this Germany book ahead of a touring holiday in Bavaria.
We have so many guides from this series because we find them all to be equally easy to use and navigate your way around. As you'd expect with Dorling Kindersley the layout is clear, the pictures colourful and eye-catching, the text easy to read and the illustrations - often cut-aways - very useful for understanding more about a building, palace or whatever.
Fully indexed with general information at the front, including a very useful brief history of the country, the book is split by geographical areas. At the back there are universally useful sections of hotels, restaurants, travel and even a quick translator to help in hotels and restaurants.
We've found and liked hotels, restaurants, museums - as well as thankfully avoided a few - with the simple, unemotional content of these guides.
On holiday we never leave the house/hotel without it so thankfully the glossy but flexible cover is pretty resilient to rain, sand and sticky fingers. A real friend when you're away.