This attraction is included in the city pass, but It's not worth the city pass if you have children because children under 17 are free.
It had some interactive things to do, but not much. It's more educational, but we whizzed it by for about less than two hours. They stress on how we need to tKe care of the environment, especially trees, and how scientists are studying the environment to make it better, especially since Montreal city is one of the most polluted cities in the world.
We weren't too impressed with this place. Looking at the outside is more interesting than the inside unless you're an environmental enthusiast supporting their cause.