Loretto Chapel miracle staircase

https://fotospot.com/attractions/new-mexico/loretto-chapel
The Loretto Chapel Staircase is a spruce spiral staircase which goes a full 360 degrees, In 1877 or 1881 a mysterious man(believed to be Francois a French carpenter) came and built the staircase and refused payment from the nuns who saw him build it, his body was later found along with a Winchester and it was believed to be a suicide. It was believed that St. Joseph patron saint of carpenter and Jesus's stepfather sent him to build the stairs but this wasn't been proven.https://en.wikipedia.org/wiki/Loretto_Chapel#Physics