Do you know the one about the princess who buried her ring in Hungary, then dug it up in Poland, only to discover a lucrative salt mine? This is the legend of Saint Kinga, the patron saint of salt miners (I know, rather specific)... and there's an incredible chapel dedicated to her just outside of Kraków, with soaring high ceilings, intricate carvings, and dazzling chandeliers. Sound pretty cool? Well, you haven't heard the best part yet: The chapel is underground. Waaaaayyyy underground. And ma