  Preserving and safeguarding the Cultural Heritage (CH) of our world from
unforeseen hazards should be viewed as a collective responsibility for
humanity. Consequently, there is a growing imperative for targeted measures
aimed at conserving, rejuvenating, and safeguarding historical assets that
carry cultural significance. In recent times, Terrestrial Laser Scanning (TLS),
Unmanned Aerial Vehicle (UAV) Photogrammetry, and applications in Mixed Reality
(MR) have assumed a pivotal role in the mapping, recording, preservation, and
promotion of Cultural Heritage. This ar-ticle endeavors to present a
comprehensive approach spanning from 3D surveying to the 3D representation and
promotion of Religious Cultural Heritage, offering an overview of the applied
methodologies. Through the integration of TLS and UAV photogrammetry
techniques, a comprehensive digital record of Panagia Ekatontapyliani, the
adjoining Church of Agios Nikolaos, and the Baptistery, along with their wall
paintings (hagiographies) and natural surroundings, has been obtained. This
record serves as the foundation for historical documentation and recreation
using the HBIM concept, paving the way for the development of diverse Mixed
Reality applications. These applications aim to enhance the visibility,
accessibility, and visitability of the Monument.
