Cultural heritage and historic preservation: Creating a digital twin of Shahjahanabad

Despite the global recognition of 's importance and role in enriching our lives, it is under constant menace. The International Council on Monuments and Sites (ICOMOS) has identified eight different threats, of which urbanization—manifested through rapid demographic changes and pressures, homogenization, loss of identity and in the worst case, demolition—is seen perhaps as the most significant.

Because these threats are complex and multi-layered, preservation and efficient management of cultural heritage demand robust information. One such information-gathering tool is geo- (GIT), which through its different forms— and graphic information systems (GIS), photogrammetry, and laser scanning—has long been used to document, model and monitor cultural heritage as well as disseminate information about it.

Recent examples include the virtual reconstruction of the Qatari city of Al-Zubarah (Ferwati and El Menshawy, 2021) and the creation of a virtual-reality application for the German town of Duisburg of 1566 CE (Tschirschwitz et al, 2019). The rationale behind many of these efforts is to help visualize the sites and so understand their previous form, function, and context, as well as re-establish their lost identity.

The case of Shahjahanabad

Digital 3D image of Shahjahanabad, which was once the capital of the Mughal empire. Credit: Vaibhav Rajan/University of Twente

Figure 1: Shahjahanabad around 1850. Credit: E. Ehlers and T. Krafft, 2003, Author provided

21st century Shahjahanabad. Credit: Shubham Mishra, Author provided

Figure 3: Area around Jama Masjid circa 1850 (left) and 2020 (right). Credit: Left: Ehlers, E., and Krafft, T., 2003. Right, Google Earth, Author provided

Figure 4: South Gate of Jama Masjid. Credit: Gianluca D'Agostino, Author provided

Figure 5: The digital re-creation of Shahjahanabad will allow its history and current state to be better understood, managed, and restored. Credit: Vaibhav Rajan/University of Twente, CC BY-SA

Figure 6: Entrance of a house in Shahjahanabad. Credit: Gianluca D'Agostino, Author provided