Marginalia are subtle rarities found at the margins of medieval codices. In the history of the book, the margin of codices occupies an anomalous, yet very important, place. It is the margin of the scribe’s text, which, through its decorative feats, makes the sacred texts at the center more acceptable. Similarly, in the urban landscape, there are peripheral situations at the edges of vision— elements that go unnoticed because they are accustomed to existing as apparent anomalies within a system. These are interruptions, intermissions, disconnections that decompose the urban structure, unconsciously interfering with the way we perceive it, immersed in our daily thoughts. These clumsy patches and grotesque seams, which fit naturally into the environment like glue between the elements, are necessary reference points, essential to maintaining the balance between the living structure and the character of the city. The result is a catalog of images, the product of a peripheral vision, in which photography becomes a tool to discover and highlight the aesthetic value of these neglected spaces, elevating them to monuments. What emerges is a common visual denominator that carries within it the essence of a global urbanity, where places become blurred and lack a definable geographical identity. Everything seems to transform into one large city, where the margins, much like in medieval manuscripts, occupy an anomalous position, yet perhaps all the more decisive precisely because of that.