Notre Dame in Paris was ravaged by a fire, the spire built in 1860 fell and there is extensive damage to the roof. The 850-year-old building has it’s interior and exterior digitally 3D-mapped and this could be the key to a historically accurate restoration.
An exact digital replica of the building was captured by a (now deceased) architectural historian called Andrew Tallon in 2015. He used lasers to map the entire cathedral, measuring the time the laser takes to reach the target and return to create a very precise image.
He describes the process in this video:
Here are some of the scans he painstakingly captured will be crucial to any future rebuilding efforts. The scans he took should be accurate to 5mm, which should serve a pretty good blueprint to recreate the stunning facade.
There was also extensive damage to its roof, which includes wood from as far back as 1160, making it one of the oldest roofs of its kind anywhere in the world. Thankfully, many of the objects inside Notre Dame were saved by the 400 or so firefighters who tackled the blaze.
Bringing this icon back to its former glory will not be cheap. France’s President Emmanuel Marcon is already leading fund-raising efforts to restore the fallen Cathedral. He’s already raised several million Euro thanks to France’s richest families.
Via MIT Review
See the original story by National Geographic about how Tallon mapped Notre Dame here.