Digital Heritage: Preserving Traditional Architecture Through Immersive Tech

Heritage/ Traditional Architecture

Heritage architecture means old buildings or structures that are important to a country’s history or culture and need to be protected. It carries the construction techniques, lifestyles, perspectives, values, and legacy of the particular era and generation. The representation of it is important for the future generation to know respect for the architectural foundation that their ancestors built.

The Cultural Heritage in Architecture represents the story and while studying the building each element speaks the story of the legacy, the materials used, social values, and the lifestyle. According to an article from Harvard University, Cultural heritage can be understood as tangible monuments, town sites, archeological sites, and works of art that carry and transmit the cultural features of a society, the spiritual, material, intellectual, and emotional features of that society or group.  

Digital Heritage

Heritage is explained in UNESCO documents as “our legacy from the past, what we live with today, and what we pass on to future generations.” A heritage is something that is or should be passed from generation to generation because it is valued. The preservation and maintenance through the use of modern techniques and digitalization. 

Digital heritage is an important connecting factor of heritage and technology. As the generation evolves in various tech fields, equipment is growing rapidly. The use of various technological products has made the process a lot easier. The process helps in merging cultural preservation with rapidly evolving technologies.

The process includes the involvement of various equipment and processes through which it is possible. Here, are some of the Technologies that are used to describe it:

Technologies

• 3D Laser Scanning

3D laser scanning, also referred to as LiDAR (Light Detection and Ranging), is a technique that uses laser beams to accurately capture the physical shape and dimensions of objects and environments.

Before this process, humans used to precisely measure with tape, and scales and document it which resulted in human error and time consumption. So, through this process, small tiny precise details can be captured to help, protect and conserve the true essence of the monuments.

• Drone Photogrammetry

Photogrammetry is an advanced technique that extracts detailed information from photographs to generate precise 3D models and maps. By utilizing ultra-high-resolution aerial images captured through UAV-mounted sensors, and integrating them with powerful GIS mapping systems, photogrammetry produces dynamic and measurable representations applicable to various real-world scenarios and applications.

The process involves capturing multiple overlapping images from various angles, which are then processed using advanced photogrammetry software to produce georeferenced 3D models and detailed topographic maps.

• Thermal Mapping

Thermal mapping, also referred to as temperature mapping, involves strategically placing data loggers at specific locations to monitor temperature and humidity over a set period. It uses thermal imaging cameras to detect temperature variations on the surfaces of buildings, helping experts identify hidden issues without causing any physical damage.

Case Study

• Notre Dame Cathedral

One of the most amazing monuments in Architecture which was built in 1163. The Gothic Architecture that endured many centuries unfortunately caught fire in 2019 which destroyed its flèche and roof. According to CNN “The reconstruction, in one sense, started even before the fire. In a stroke of luck, in 2015, art historian Andrew Tallon carefully scanned the building with lasers. Tallon, who studied Gothic architecture, was trying to understand how medieval builders erected some of Europe’s great cathedrals.” 

He used the technique of 3d Laser with 12 lasers and seven engineers and collected more than 45000 pictures which helped in the restoration of the cathedral. Through his dedication and use of technology, this amazing example in the history of architecture is standing tall even today.

Benefits

• For the whole process, less manual labor can be used for the technological aspect which results in faster restoration and preservation process.
• The pace that it takes to make it complete is faster than the manual method.
• The accuracy that the technology provides is far more precise than the traditional method.
• Through the preservation process of digital value the lasting value increases.
• The digital access gives an option for recovery and backup which results in a smooth process.

Challenges

• The process to get more resources and experts in the fields are quite expensive as the technological equipment is quite far away and the specific resource person is required through various training and processes.
• The more advancement of equipment and knowledge from generation to generation may result in struggle in aspects of technology.
• The lack of data safety and privacy may result in hacking and breaches.
• For restoration of some monuments a strict permission must be granted which may cause in longing of process and complexity.

Architecture and tech go side by side and in the case of heritage, it plays an important role in the longevity and protection of ancient documents.  The era of digitalization should go hand in hand with the ancient heritage in the long run and be a gift for future generations. Architects, archeologists, and engineers like us should be more aware of the recent innovations that will help us in the long run for the preservation and restoration of our heritage.

References:

1. What is Heritage Architecture? (no date) Bidwells. Available at: https://www.bidwells.co.uk/insights-reports-events/what-is-heritage-architecture/#:~:text=Heritage%20architecture%20is%20a%20term,country’s%20heritage%20and%20require%20conservation. (Accessed: 20 June 2025). 
2. The Curation and Management of World Heritage, Department of History of Art and Architecture, Harvard University [online]. Available at:  https://projects.iq.harvard.edu/whoseculture/what-world-heritage [Accessed date: 20/06/2025].
3. kaur, R. (2025) How 3D laser scanning helps in restoration of heritage monuments?, Medium. Available at: :https://medium.com/@ratinderkaur2018/how-3d-laser-scanning-helps-in-restoration-of-heritage-monuments-a9f33c01a8e1 (Accessed: 22 June 2025). 
4. An introduction to drone photogrammetry (2025) Mapware. Available at: https://mapware.com/an-introduction-to-drone-photogrammetry/ (Accessed: 22 June 2025). 
5. Bussler, F. (no date) The ultimate beginner’s guide to drone photogrammetry, The Drone Life. Available at:https://thedronelifenj.com/drone-photogrammetry-beginner-guide/(Accessed: 22 June 2025). 
6. Kelly, S.M. (2024a) A billion laser points helped bring Notre Dame back to Life | CNN business, CNN. Available at: https://edition.cnn.com/2024/12/23/tech/ai-models-tech-notre-dame-cathedral (Accessed: 21 June 2025).