Welcome to the heritage trail of Central Europe. A densely castellated country is a challenge for cartographers. On such a map, everything is marked, including castle ruins you can't find even when you are standing directly on top of them. Each comment is almost exactly overleaf to its right place on the map. Since a picture paints a thousand words, proper tourist maps try to draw your attention to what the Germans call Sehenswuerdigkeiten , or the more noteworthy sights, by using little symbols and pictures.
Pictures take up space and obscure the map.
This is significant, because in a densely castellated country, you have to be selective. So, I encourage you to buy several alternative ones. You might think that the right tactic is to visit anything shown on all the maps. That is a bit like going to the most well-advertised beach. Go off the beaten track and you get a few nice surprises.