The United States of America is not typically thought of as a land of castles, and with good reason—the uniting of the American states coincided, not coincidentally, with the beginning of the end of the era in which kings and queens ruled over everything, holing up in huge fortified houses so that the peasants and/or invading barbarians couldn't kill them.
But in a way, that's too bad, because the U.S.A. is a land of excess, and there's nothing more excessive than a castle. And there are some castles in this country—maybe more than you'd expect—which range from (mostly) vanity projects, to mini golf courses, to even a few places that originally served some military purpose. In fact, we found a castle in every state in the U.S.A.