There won't be a single nail, screw or piece of metal in Notre Dame's new medieval roof frame. Retired Gen. Jean-Louis Georgelin is in charge of the entire project of rebuilding Notre Dame.

Carpenters working on the roof of France's Notre Dame Cathedral which was ravaged by a fire in 2019 are using medieval techniques to rebuild the structure.

A crane lifts a part of the new roof of the Notre Dame de Paris cathedral, May 25, 2023, near Angers, western France. By Associated Press. UPDATED: May 30, 2023 at 12:34 PM CDT.

The bells replace three that were previously positioned near Notre Dame’s 19th-century spire, which dramatically collapsed during the fire which ripped through the cathedral’s rafters and roof.

Notre Dame's fire-ravaged roof rebuilt using medieval techniques. June 8, 2023 at 10:00 p.m. | Updated June 13, 2023 at 9:48 a.m. by Jeffery Schaeffer, Associated Press ...

A crane lifts a part of the new roof of the Notre Dame de Paris cathedral, Thursday, May 25, 2023, near Angers, western France. Carpenters building a new timber frame for the fire-ravaged roof of ...

Carpenters building a new timber frame for the fire-ravaged roof of Paris' Notre Dame Cathedral are using the same tools and techniques as their medieval predecessors.

Carpenters building a new timber frame for the fire-ravaged roof of Paris' Notre Dame Cathedral are using the same tools and techniques as their medieval predecessors.

Carpenters building a new timber frame for the fire-ravaged roof of Paris' Notre Dame Cathedral are using the same tools and techniques as their medieval predecessors.

SAINT-LAURENT-DE-LA-PLAINE, France — If time travel was possible, medieval carpenters would surely be amazed to see how woodworking techniques they pioneered in building Notre Dame Cathedral ...