If you read Fictions of Luis Borges, and you liked the book, then read also Cosmicomics of Italo Calvino.

These short stories start from a scientific fact, but they became soon surreal, imaginative and with an irresistible touch of irony.

Best stories of Fictions (IMHO): "The lottery in Babylon", "The Library of Babel", and "Pierre Menard, Author of the Quixote".

Best stories of Cosmicomics: "Games without end", and "The dinosaurs".