In a sense, Open City is a kind of Wunderkammer, one of those little rooms assembled with bric-a-brac by Renaissance scholars. I don't mean it as a term of praise: these cabinets of curiousities contained specific sorts of objects - maps, skulls (as memento mori), works of art, stuffed animals, natural history samples, and books - and Open City actually contains many of the same sort of objects. So, I don't think it's as simple as literary inclusiveness.