City of Saints and Madmen - Jeff VanderMeer
The first in a loose trilogy of books about a (violent, fungus-encrusted) fictional city called Ambergris. This, the first book, is a collection of novellas and short stories in various forms (some are more traditional, but one story is an in-universe historical pamphlet with snarky footnotes; another is a lengthy bibliography with annotations that gradually reveal their author's backstory) that show Ambergris through several lenses and at several points in history. It is excellent, as are its sequels, Shriek (a manuscript written by a character from CoSaM and interrupted by comments from another) and Finch (a detective novel set in the conquered city's future).
i was going to recommend this but i always do, so...!
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the raindrops the raindrops the raindrops the raindrops the raindrops the raindrops the raindrops the raindrops