We took the tram up for the 360 degree view of Montreal. I usually forego these attractions because I think they are a rip off. However, since this was included in our Montreal Passport, why not?
Ride up was smooth and you get to see the city on your way up. Afterwards, you can spend as long as you like at the observatory. This reminds me of the Peak in Hong Kong and the Empire State Building. It was a clear day so you can see everything!