What was the Council of Edifice building before the Ruin in Lowry's "Gathering Blue"?
Given that the windows of this structure were made of stained glass, the reader can suppose that the building had most probably been a church. The mention of a wooden cross on the wall of unknown purpose or origin also supports this theory. One can also deduce from this that after the Ruin (an atomic holocaust?), even the most basic institutions no longer had their place in what remained of the human population.
It is ironic that it is in this ex-sanctuary that Kira takes refuge in her role as a master weaver after the death of her mother.