Atlas Obscura: Loretto Stair Case, Santa Fe NM

Thought HN folks would enjoy this engineering marvel, a helix staircase built in the 1800s with no nails or central support column, under mysterious circumstances.

* A short piece on the engineering: https://nanoten.com/travel/Santa-Fe/

* An academic paper on the underlying physics: "Origin of Unusually High Rigidity in Selected Helical Coil Structures" (2018). https://arxiv.org/pdf/1706.03288.pdf

* An examination of the "less miraculous" pieces of the legend: https://cdn.centerforinquiry.org/wp-content/uploads/sites/29...