Spanish writer Antonio Muñoz Molina devotes his literary work to the description of a type of heroes that dates back, in his own words, to the Ulysse of James Joyce. Referring to Daniel Defoe, Muñoz Molina gives this figure, which wars alone and without purpose through the labyrinth of the major city, the designation of ‘urban Robinson’. The city is at the centre of the perception: it is the object of the discourse desire and serves as a principle of historical understanding, thus becoming the central element of the entire narrative. This representative analysis of the novels Beatus Ille (1986) and Bel-bros (1989) presents and discusses the functions and representations of the urban space in the texts of Antonio Muñoz Molina.