Whats the Council Edifice?

From the text:

Very little had survived the Ruin, but somehow the structure called the Council Edifice had remained standing and firm. It was immeasurably old. Several windows still contained patterned glass of deep reds and golds, amazing things, for knowledge of the way of making such remarkable glass had been lost. Some remaining windows, ones in which the colored glass had shattered, were now paned in a thick, ordinary glass that distorted the view through bubbles and ripples. Other windows were simply boarded over, and parts of the building's interior were darkly shadowed. Still, the Edifice was magnificent in comparison to the ordinary sheds and cottages of the village.