Paris authorities have announced plans to undertake a major restoration project focused on the flying buttresses of Notre Dame cathedral. These stone arches, which provide critical structural support to the cathedral’s upper walls and vaults, withstood the 2019 fire but have not undergone significant repair since the 19th century.

The restoration is estimated to cost approximately €150 million. Much of the funding allocated for this work originates from donations and resources raised in the wake of the devastating blaze that severely damaged the iconic landmark. The project aims to address the weathering and wear accumulated over centuries, ensuring the structural integrity and longevity of the cathedral.

The flying buttresses are key architectural elements that distribute the weight of the roof and upper walls outward to external supports, allowing for the cathedral’s signature lofty interiors and large stained-glass windows. Their preservation is considered essential not only for maintaining the building’s stability but also for safeguarding its historic Gothic design.

Authorities have emphasized that this work is part of broader, ongoing restoration efforts to revive Notre Dame following the fire, which caused extensive damage to the roof and spire but left the main structure, including the buttresses, largely intact. The comprehensive restoration campaign continues to focus on both safety and heritage preservation, balancing modern techniques with respect for the cathedral’s centuries-old craftsmanship.

Work on the flying buttresses is expected to proceed alongside other restoration activities, with the goal of completing the cathedral’s reconstruction and reopening to the public while maintaining its historic character.