Looks like the Frenchies were well-prepped for such a scenario. While everyone yelled at them for not putting out the first fast enough, they had busy little bees moving stuff out the back. Thank you Lord!
a) Put your fire crews on a fire where odds are AGAINST containment?, or
b) Put your fire crews in a human chain to take as many relics to safety as possible?
Looks like they chose b).
Sweet. Good news
The French have had a lot of practice at saving precious things, starting with 1870, 1914 and 1940. Good for them. At least someone was NOT asleep at the wheel.