(ABC) It’s been nearly a month since the flames leaping from Notre Dame Cathedral in Paris left the world aghast.

The cathedral’s 19th century spire collapsed into the church’s nave, irreparably piercing through the 850-year-old building, a landmark of Gothic architecture sitting in the heart of France’s capital.

It took several hours for hundreds of firefighters to quell the flames, which ignited during an evening mass on April 15 at the start of Holy Week, the busiest and most important period of the liturgical year. The cause of the blaze is still under investigation, though Paris prosecutor Remy Heitz has told reporters it was “likely accidental.”

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