An American art historian, Andrew Tallon, a late professor of art at Vassar College, created a spatial map of Notre Dame using more than a billion laser-measured points in an effort to better understand how medieval Gothic architecture was built. His digital model will immensely aid restoration efforts because it details precisely what the church looked like before the fire’s destruction. This painstakingly project, performed in 2015, offers a perfect digital replica of the Gothic structure that could help architects and engineers rebuild it after the April 15-16, 2019 fire.