Tour guides have been answering questions about it for years. There's a large gold crown in a case, situated by the elevators in Notre Dame's Main Building (aka, the "Golden Dome"). A plaque inside the case offers some explanation, but there's much more to know. Turns out, this crown may not be the most famous piece of royal headwear the University has received. Our story is about two crowns, one crime, and one unsolved mystery.