CNN  —  After a catastrophic fire five years ago, the Notre Dame Cathedral de Paris reopened this month looking almost the same as it did when it was first constructed in 1163. The massive reconstruction project was a testament not just to the hard work of the French people – but also to the lasers, drones and other advanced technology that gave rebuilders a window into the building’s past. “The time frame wouldn’t have been possible without the record of what existed,” Amy Bunszel, executive