Recently finished "The Inverted World" by Christopher Priest. I really liked it (the idea of moving a city, the society arising within), except for the last few pages (the reveal of the twist ending the cover promises).
I'm taking a pause on Brunner's The Whole Man and am going to read his classic Stand On Zanzibar as soon as it comes from Amazon...
I quite liked that. Not so much for the story (which was ok), but for the world building. Really made you feel what it would be like to live in an overpopulated world