As Japan’s UNESCO World Heritage site Gunkanjima (also known as Hashima Island or Battleship Island) undergoes rapid deterioration, the Heritage Databank project was launched to digitally preserve and utilize the island’s historical and cultural value. The project accomplished a complete digital archiving of the entire site—once thought impossible—by precisely replicating even the restricted areas of Gunkanjima through high-resolution 3D scanning. It went beyond simple documentation of cultural heritage, enabling the public to experience every space and detail of these inaccessible areas without being physically present. Furthermore, the 3D data and archives have been applied across various industries, including film, education, and gaming. The project received high praise from the jury for presenting a new paradigm in cultural heritage preservation through the harmonious integration of creative data, technical excellence, and social value. It was also recognized for establishing an open platform accessible to all, ensuring broad public access and a high level of usability.