Integrated approaches for architectural decay mapping: a case study of the historic Tuna Factory "Florio" on Favignana Island, Sicily, Italy (IDEHA Project)

This paper presents a multi-analytic study conducted as part of the IDHEA project at the former Tuna Factory "Florio," an architectural complex situated on the captivating island of Favignana within the Egadi Islands, Trapani, Sicily, Italy. As a 19thcentury industrial archaeology pole, this site stands as an intriguing nexus of architecture, museum exhibits, and cultural significance, rendering it an ideal experimental ground for pioneering methods and technologies aimed at preserving, managing, and enhancing cultural heritage. Given its coastal location, the structures are highly susceptible to marine, geomorphological, and environmental threats, intensifying material degradation risks. In this study, different approaches were adopted for the inspection, decay assessment and architectural survey of the building complex, including 3D architectural surveys via terrestrial laser scanning, drone-based RGB photogrammetry, multispectral data collection, and direct inspections. This integration yields comprehensive data and intricate 3D models, aiding in pinpointing specific vulnerabilities. The study culminates in the implementation of a GIS platform that harmonizes all data, serving as a pivotal resource for managing and preserving this historically significant site.