Miraculous staircase built by Saint Joseph, the mysterious carpenter

This staircase with 33 steps, no nails, and with wood from Palestine, was built by Saint Joseph the foster father of Our Lord after the nuns completed a nine day novena to him, asking him to resolve a very difficult architectural problem.

See the whole story here:

http://infallible-catholic.blogspot.com/2012/03/miraculous-staircase-of-saint-joseph.html