The book is a dialogue between the visual and literary languages, comprising 40 photographs taken in the last eleven years and that are a reflection of different stimuli and sensations, surprises and opportunities, forms and symbols found in large cities (Bogota, Mexico City, etc.) and that make us cling to them. However, despite touring the streets of the city every day, passing them without looking at them, becoming invisible to our eyes. It is also a tribute to Italo Calvino's book "Le citta` invisibili" (Invisible city). With texts by author Oscar de la Borbolla.