Precisely. I'm not an architect but it would seem to me that having a hall domed when the building is not would be rather unusual. A hall is usually incorporated into a building (except for those buildings which are called "halls" for some reason or other). If the domed structure is called "Fuzzlewit Hall" and is a standalone building, it would be a "domed building" as well as a "domed hall". If, however, "Fuzzlewit Hall" is a large room within a building, the hall is not likely to be domed while the rest is not.Yes, you can say domed in this way: domed hall, domed room, domed building. "Dome hall" would not be right as a description, but it might be the name of a particular hall. The "place" would have to be a hall, though, if you are calling it a hall.