Gnomon by Nick Harkaway has a plot that is intricate and highly metaphorical. Read it for the intellectual plot.

Examples: have you read any Jorge Luis Borges or Italo Calvino?

M. Joh Harrison deconstructs plot. If you try to read him just for the plot, you will be bored or baffled.

So if we are talking scifi, is it comparable to dhalgren?