‘The Invention of Morel’ (1940) by Adolfo Bioy Casares is usually classed as ‘literary fiction’ (whatever that means), but for me it’s an exemplary piece of fantastika.
New on my blog is the second half of my top 10 imaginary worlds. I get a bit deeper this time (or go on a bit more!), as these are ones that have shaped me as a writer.