It offers a pretty cool concept and practical: each page has a map on a neighborhood to unfold cardboard so strong and rigid that does not fall when you open the book (the rigid paperboard appearance preserves the right card without the need to hold, which is convenient for example when you walk and you already have the book in hand).
And on top of the map (detailed with what to it is with the bare necessities) you will find information on the essential places to visit in the area said.
It is a perfect guide who will accompany you when you want to visit Berlin on Foot, Metro, Bus, Tram ...
Conquered by this guide, I will not hesitate to invest in the same series for my next trip abroad :)