This is the first time the reconstruction
team at Notre-Dame has opened the cathedral
doors to the media.
In April, the world watched as the Gothic masterpiece went up
in flames.
A massive effort is now under way
to secure the building structure and clear debris.
Over 40 teams are currently on site for the reconstruction,
with four lead architects, and between 60 and 150 workers.
A billion euros was pledged for the reconstruction effort,
but only a fraction has so far been received.
These are the pieces of the jigsaw that
need to be put back together.
The first stages in Notre-Dame's reconstruction
will see architects and engineers work together
from a digital copy of the building, made possible
by 3D laser scanning.
This is Sainte-Chapelle, another masterpiece of the Gothic era,
located just a short stroll from Notre-Dame.
Benjamin has been tasked to scan it as part of a global effort
to preserve landmarks across the country.
This method creates an exact copy
of a building in the event of destruction or fire.
Such innovation continues today.
The scan provides the foundation for the rebuild of Notre-Dame.
This modelling can be used by every single worker
on the construction site, and the different teams
share the modelling in a common database.
Then construction can begin in earnest.
The reconstruction project is expected
to take at least five years.
There are still questions over the stability
of the vaults in the cathedral, and how the reconstruction
will look is yet to be decided.
The battle to save Notre-Dame has only just begun.