Stone? Brick? Wood? What sort of stone? And what color, so I can tell whether the stonework is black, or gray, or pink, or gold?
A question implicating all sorts of things. Where are the woodlands? Are there clay pits near by? How about quarries? How far can you transport materials, and would you bother?
Implicates history, too, since the building material can easily change over the years as woodlands are depleted, and quarries exhausted.
And all I want to do is describe what the city looks like to someone who's a bit attentative to visual detail but not strong on either architecture or its history. . . .