In October 2004 the Bologna City Council organized an exhibition on this photographic research. The exhibition and the catalogue were directed by the photographer Nino Migliori and presented by an essay of Prof. Carlo Arturo Quintavalle.

For this research Valentini has chosen to use a peculiar kind of colour, nearly monochromatic, capable of creating a feeling of estrangement, a work that Nino Migliori has described "of extraordinary chromatic and evocative interpretation".

Analyzing this choice of colour also Carlo Arturo Quintavalle's essay says that "… Valentini wanted to first alter the skin of the sculptures, and strove to remove their neglected air and the looming and oppressive presence of their still forms… Hence, we find dialogues between figures, details never captured before and, above all, the idea that visiting these sculptures is a rediscovery of feelings and their changing, or of the endurance of feelings within the sculpted icons".

Quintavalle goes on. "Valentini chose to follow the path that his images indicate: close cuts, the utmost uniformity in materials, and the removal where possible of the cold marble figures and their poses - all revealing, within each monument, within each individual figure, a language with the modern slant in the cuts, composition and colour".