Few are as intriguing as the hundred or so Roman dodecahedrons that we have found. We know next to nothing about these mysterious objects—so little, in fact, that the various theories about their meaning and function are themselves a source of entertainment.
^ This ancient dodecahedron found in Avenches, Switzerland, once the Roman city of Aventicum. Woudloper/Wikimedia/CC BY-SA 3.0