The final chicane at Circuit Gilles Villeneuve has always demanded precision: a tight, late-braking left-right flick onto the start-finish straight, with an unforgiving concrete wall sitting close enough on the exit that there's almost no margin for a mistake. In the 1999 Canadian Grand Prix, that margin ran out repeatedly.
Michael Schumacher, reigning multiple world champion in all but name by that point in his career, clipped the wall exiting the chicane and was out. Not long after, Damon Hill — the 1996 world champion — crashed into the same wall. Then Jacques Villeneuve, the 1997 champion, racing at a circuit literally named after his father, crashed into it too, in the most poetically cruel version of the same mistake.
Three world champions, the same corner, the same wall, the same race. The coincidence was too perfect for the paddock and press to ignore, and the nickname stuck almost immediately: the Wall of Champions. It has remained the corner's informal name ever since, invoked every time a driver — champion or not — makes the same small error at the same unforgiving spot.