Imagine for a second, if you can: Donald Trump mixing up history and lying about stuff. Yes, the man who claims he saw thousands of Arab-Americans celebrating 9/11 in New Jersey also has an addled memory of Civil War history, according to a report from The New York Times.

The Times reveals that in 2009, Trump built a real monument to a fake Civil War battle site on one of the courses at his multi-million dollar Trump National Golf Club in Virginia. The monument, which sits between the 14th and 15th holes overlooking the Potomac, commemorates a so-called “River of Blood.” Its inscription reads:

Many great American soldiers, both of the North and South, died at this spot. The casualties were so great that the water would turn red and thus became known as “The River of Blood.” It is my great honor to have preserved this important section of the Potomac River! — Donald John Trump

Unfortunately for any Trump National members looking to spoil a good walk with some history, “The River of Blood” is something somebody just made up.

Or, as historians tell the Times, “nothing like that ever happened there.”

Trump, of course, stands by his monument to nothing.

“That was a prime site for river crossings,” he explained the Times. “So, if people are crossing the river, and you happen to be in a civil war, I would say that people were shot—a lot of them. ...Write your story the way you want to write it. You don’t have to talk to anybody. It doesn’t make any difference. But many people were shot. It makes sense.”

Per the Times, Trump refused to offer an evidence to corroborate his claim that the Trump National Golf Club—with initiation fees starting at $200,000—sits on a major piece of history. This mixup will obviously have little bearing on the election, but it’s another funny thing.