Designed in 1889 by architect Pompeo Passerini, the Palazzo Avogadro e Martel stands as one of the most significant examples of eclectic Roman architecture of the late nineteenth century. The façade, set on a travertine base, is distinguished by stucco window frames and by the crowning fourth floor, enriched with decorative panels featuring putti. The building’s design was part of the broader development of Corso Vittorio Emanuele II, one of the main post-Unification urban projects aimed at redefining the image of the new capital. The conservation restoration project made it possible to recover the original finishes through stratigraphic investigations and material analyses, revealing the faux travertine treatments on the stuccoes and enhancing, through a carefully balanced color palette, the decorative panels with putti crowning the façade. The chromatic and material choices were defined in collaboration with the SSABAP, with the goal of restoring the building’s authentic appearance and its original decorative richness.