I'm looking for the German-language equivalent of the Petit Larousse Illustré, and, embarrassingly enough, I can't figure out what keywords to search for it with. Or rather, everything I've tried—illustriertes/bebildertes Wörterbuch/Lexikon, etc—has failed miserably.
(Of course, my failure with this search may stem from the fact that such dictionaries are simply not as common in German as they are in other languages, but I find this impossible to believe.)
BTW, an "illustrated dictionary" (like the Petit Larousse) is an entirely different type of dictionary from a Bildwörterbuch ("picture dictionary")! I have no problem at all finding the latter. In fact, "Bildwörterbücher" is basically all my searches turn up!
Also, from what I've seen, pretty much every German dictionary aimed at school-age children could be described as "illustrated", even though they are never listed as such. The Petit Larousse, however, is not a work designed specifically for children (although I'm sure that children from age, say, 9 or 10 onwards, would have little trouble using it).
EDIT: It seems that, as difficult as it may be to believe, this sort of dictionary is just not produced in the German language anymore, with the possible exception of the Wahrig that splattne mentioned in his answer. (I write "possible exception" because I have not confirmed yet that is indeed still in print). I don't know what to make of this phenomenon.