The Notre Dame Cathedral in Paris, one of the most visited landmarks in the world, went up in flames on April 15. The French prosecutor's office has launched an investigation into the cause of the fire, which destroyed much of the roof and caused the main spire to collapse. The cathedral, which dates back to the 12th century, was in the midst of renovations, with some sections under scaffolding.
Notre Dame Cathedral Goes Up In Flames

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The two towers of Notre Dame Cathedral in Paris as seen from the spire in June 1998.

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Smoke billows as fire engulfs the cathedral on April 15, 2019.

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Notre Dame cathedral in a 1987 photo.

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Smoke and flames spew from Notre Dame Cathedral on April 15, 2019.