It is and if you had gone to the original Expo 67, as I did, you would know just how freaking creepy that place is now. I am also assuming it is still there. It was the last time I went to Montreal which was about (or in Canadian, eh... aboat) 10 years ago. For a number of years it was used as a Canadian exhibit of some sort, I don't really remember what it housed, but, it was actually wide open then. The structure was still there, the different floor levels were in place, but, the plastic external covering was what burnt up in the fire was never replaced. So if it rained, it was raining inside as well.
I think they wanted to keep it as the Expo Icon, somewhat like the globe from the NY Worlds Fair. If you look at that picture, just to the right of the burning USA pavilion you can see the remains of the concrete slab that was once the USSR Pavilion. Back in the "Cold War" days the competition to get the most attention was fierce. The US won, we had all the space capsules hanging from the ceiling and some Elvis stuff. They had farm equipment.
Here's a link that give you an idea of what it was like. Note the early monorail/people mover ride that took you to both sides of the islands and right through the middle of the US Pavilion. I have a large photograph on my "office" wall of the aerial view of the site.
https://www.mtlblog.com/these-20-pictures-of-expo-67-will-leave-you-speechless-there-are-no-words/