Yes it is certainly possible. Here's why...
VE Day is the celebration of the day Germany signed it's surrender. May 5th is the day Germany capituated in the Netherlands. (WWII) The Netherlands sends tulips every year to Ottawa in remembrance. Ottawa has an annual Tulip festival where the majority of the display is at Dow's Lake, (Commissioners Park) which is also the sight of the Man with Two Hats statue that Maanca described. I wouldn't be surprised if Dow's Lake is the Pitstop!
But...two things. First, this leg (as Fossil pointed out) will probably be filmed today, not yesterday. Second, this would only make sense if they go to the Netherlands on the next leg, IMO. That isn't really their pattern in previous seasons, but their route this year has been different.