Integrated 3D methodologies for the knowledge and the valorisation of fortified heritage in Central Sicily: the castle of Agira

The ruins of the ancient citadel of Agira testify a long past. Investigations based on the theoretical apparatus of the restoration discipline and ran out through the most innovative 3D survey methodologies have recently highly improved the knowledge of a lieu of great historical and architectural complexity. In particular, data captured by UAVs, together with the information obtained by terrestrial measurements, were essential to evaluate the criticality of such valuable heritage. This study, part of a larger research, intends to illustrate a methodological program aimed at the documentation, conservation and valorisation of a significant witness of Sicilian culture, today at risk.