Using drone technology, an aerial digital scan over Humayun’s Tomb and Garden Complex captured this point cloud of data.

AKDN / Courtesy of the Aga Khan Trust for Culture

Laser scanning was also used to document the buildings in the Nizamuddin Area including the World Heritage Sites of Humayun’s mausoleum-garden, Isa Khan’s garden-mausoleum, Nila Gumbad, Sabz Burj, Chausath Khamba and all the buildings in the Nizamuddin Dargah Complex at the onset of the project.

All buildings in the Complex were documented using 3D laser scanning, and transferred to AutoCAD (a computer-aided design software that architects, engineers, and construction professionals rely on to create precise 2D and 3D drawings), demonstrating the true shape of the dome, and other features of the monuments. This allowed a detailed assessment including a stone-by- stone inspection of the entire façade – wherein every stone was individually recorded, its condition analysed and its specific repairs planned.

Lahore, Pakistan: Digital tech and the 400-year-old Picture Wall

The Picture Wall is one of the principal features of the Lahore Fort UNESCO World Heritage Site. Built approximately 400 years ago during the Mughal era, it is one of the largest murals in the world. The 460-metre long monument has angels, demons, dragons, fairies, animals and humans depicted on it to show the glory and pre-eminence of the Mughals when they were at the height of their empire. In May 2019 the conservation of its 73-metre-long western facade – aided by contemporary digital documentation techniques including 3D laser scanning and drone photogrammetry – was completed by the Aga Khan Trust for Culture in collaboration with the Walled City of Lahore Authority.