France’s Notre-Dame Cathedral in Paris is finally stable and secure enough for artisans to start rebuilding it, more than two years after a shocking fire that tore through its roof, knocked down its spire and threatened to bring down the rest of the medieval monument.

The government agency overseeing the reconstruction announced in a statement Saturday that the work to secure the structure — which began the day after the April 15, 2019 fire — is at last complete.

Carpenters, scaffolding experts, professional climbers, organ mechanics and others took part in the effort, which included special temporary structures to secure the iconic towers,