At this time of the year?
Probably skiing or snowboarding. There's also a mountain I forgot the name of that you can visit and see the city from above
Discussion
Can you get to any of them via Uber or public transportation?
It's been over 15 years since my last visit so I'm not sure, I know that if you put your destination in Google maps, you can select public transport instead of car directions and it'll show you how to get there. I personally think the best way to enjoy Canada is to rent a car and drive around
We are just up for two days on this trip. Normally we get rentals.