The Loretto Chapel in Santa Fe, New Mexico is famous for its "miraculous staircase" built in 1898. When the chapel was completed, there was no way to access the choir loft 22 feet high. After 9 days of prayer, a mysterious carpenter arrived and built the staircase without any blueprints, using no nails or glue. The spiral staircase has two complete 360 degree turns within the small space but has no central support. The carpenter then disappeared without accepting payment. There are three mysteries surrounding the staircase - the identity of the carpenter, how it is structurally supported, and where the unusual wood came from.