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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A view of the spire before it collapsed in the blaze on April 15, 2019. The spire was built during a restoration of the cathedral in the 19th century.

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The spire collapses in flames during the blaze on April 15, 2019.

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The cathedral on the island in the River Seine, the Ile de la Cite, is seen in a photo from 1911.

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A nighttime view in 1933.