Is there a freely available (governmental?) heightmap dataset for Kraków city (in Poland) with horizontal grid ~5m (or better) and vertical resolution ~ +/- 0.1m? Ideally, it would include building heights (i.e. not "ground level").
If you don't know one, at least do you know of some good open forum where I could ask such a question with some hope of getting an answer?
Sorry if that question doesn't use proper terms and/or is too unclear, or otherwise totally ridiculous; I'm totally unexperienced in GIS.