So, you thought that the Hogwarts Express left from platform 9 and 3/4 at King's Cross Station in London, eh?
Well, it took a detour to Dublin yesterday evening, according to the below picture snapped by a Reddit user.
Either that, or some bored employee was let loose on the control panel and wanted to have a bit of a laugh. But lads, if you're going to do something, do it right - 'Calling at Slytherin and Hufflepuff' just doesn't make sense.
Other commenters said that it was for a Trinity College 'Mystery Tour' Potter-themed event that went to Limerick, which solves the mystery.
As an aside, the petition to get J.K. Rowling to write a 'Harry Potter in Limerick' story starts now.