It's quite clearly filmed in Gatineau's Canadian Museum of Civilization!
The Graystones dancing (filmed in the great hall of the museum):
For comparison, here's a shot of that hall; note the columns and totems in front of the window:
Photo Credit: flickr user Яick Harris
This shot, a few seconds later, prominently features one of the museum's Inuit sculptures. If I recall correctly, it's somewhere up on the second floor.
I wonder when this was shot - it looks like summer outside, which means if the view isn't retouched too much, it was shot before this winter?
