The recent "disappearance" of Sandy Island—a long-mapped island in the South Pacific that appears to have never existed—was a fresh reminder that, even with the most modern, state-of-the art, satellites-and-all technology at our disposal, we still may not actually know where everything is. Frankly, we never have—and we've made some pretty awful guesses over the years.
Though it's probably one of the most well-known cartography-related phrases, "Thar Be Dragons" has, as far as we know, only appeared on a single map. That map is the Hunt-Lenox Globe, currently in the New York Public Library's collection. The globe's origins are mysterious; no one knows where it came from or [...]