The trailer makes Calgary look like it's in the mountains, not near it. There is a mountain behind the olympic ski jump.
It's like they were too lazy to even google a picture of how the ski jumps looked like!
Ladies and Gentlemen, I present to you, Calgary circa 1988, as envisioned by Matthew Vaughn:
Not a single #### was given.
According to the comments, the location is actually Oberstdorf, Germany and no attempts were made to mask any of it's modern look (they even left the tracks in, which didn't exist in the 80's) or to use era-correct equipment.
They even use brand new rossignol skis...