Here the national land survey bureau (ČÚZK, rough translation) maintains maps in a similar scale to the one you posted. But they were opened only recently (they

Here the national land survey bureau (ČÚZK, rough translation) maintains maps in a similar scale to the one you posted. But they were opened only recently (they used to be for sale for pretty high prices) and the bureau haven't built a compelling web interface over them. The current UI [1] is basically just an ArcGIS frontend, with no automatic layer choosing based on zoom level and quite slow at that. Planning maps are usually unfortunately only held by the responsible subjects (towns and larger administrative blocks), so there's no one map or one format. Most of these maps are at least published in some viewable capacity, though, from what I can tell. [1]: https://ags.cuzk.cz/geoprohlizec/ https://ags.cuzk.cz/geoprohlizec/