Anyone would think Berkhamsted Castle’s moat had been filled with water once more to fend off potential invaders.
But – centuries after it fell out of use – it is in fact torrents of rain that has filled the area around the historic landmark.
This website understands the castle has now been closed due to ‘high water levels’.
Simon Ragoonanan posted a photo of the castle’s moat on the social networking website Twitter.
He said: “Record UK rainfall means the Berkhamsted Castle moat is back up to 1066 levels.”