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From Digital Twin to Memory Twin: A Holistic Framework for Cultural Heritage Documentation, Interpretation, and Adaptive Reuse

Cultural heritage worldwide is increasingly at risk due to climate change, armed conflict, urbanisation, illicit trafficking, and the broader forces of globalisation. These natural and human-induced threats contribute to the irreversible loss of both tangible and intangible cultural assets. In response, heritage digitisation has advanced significantly - from basic 2D documentation to sophisticated 3D technologies - underscoring the urgent need for structured, ethically grounded methodologies in data acquisition.

This paper introduces the Memory Twin: an innovative framework that redefines digital heritage representation by integrating high-fidelity visuals with Paradata, Metadata, Data and intangible cultural values. Building on and extending the Holistic Historic Building Information Modelling (HHBIM) approach, the Memory Twin enriches digital heritage environments with narrative, emotional, and community-driven content, fostering inclusive access, transparency, and long-term cultural significance.