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The original was posted on /r/todayilearned by /u/pocketbutter on 2025-02-22 16:38:01+00:00.

Original Title: TIL in 1878, the Loretto Chapel was constructed with a wooden spiral staircase of unusually masterful craftsmanship. No builder was officially credited for the staircase, but legends say that a mysterious carpenter arrived and built it overnight, then left without collecting pay.