Holy Week Horror.

A fire engulfed the Notre-Dame Cathedral in Paris Monday evening — people around the world watched in horror as the iconic spire collapsed.

AP reported: Notre Dame spokesman Andre Finot told French media the entire wooden interior of the building is ablaze and will burn: “Everything is burning, nothing will remain from the frame.”

Also according to the Associated Press, firefighters and other first responders were working to salvage art and other priceless pieces stored inside of Notre Dame.

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🔴 BREAKING – Structure of Notre-Dame has been saved from total destruction, say French firefighter officials https://t.co/TT1WJXzzEl pic.twitter.com/j3Wnt6nj3T — FRANCE 24 – Breaking (@BreakingF24) April 15, 2019

French Catholics kneeled in prayer with rosaries and sang Ave Maria across the river from Notre Dame Cathedral.

Notre Dame is a landmark in Catholicism and one of the most prominent cathedrals in the Christendom.