The Loretto staircase in Santa Fe New Mexico. Three mysteries surround the spiral staircase in the Loretto Chapel: the identity of its builder, the type of wood used, and the physics of its construction Some say this should not exist as it looks impossible to replicate/ have been made. Google the stories around it’s making, some say it was a time traveler who made it, others an angel or a ghost. I think it was a very smart unknown artisan. Whatcha think?