I flew to Calgary, which was only an hour and 20 minutes from Seattle, drove to Banff (about 90 minutes), while there took a day tour with a local guide that included Lake Louise and environs, then drove back from Banff to Calgary where I spent an afternoon, flew to Vancouver for a day and from there drove home. I was afraid I’d overpacked but that turned out not to be the case as temperatures and weather were radically different in the different locations - with freezing temperatures in the Canadian Rockies, hot weather in Calgary, and cool, drizzly weather in Vancouver.
The first photo is a generic one of Banff - everywhere you look, the Canadian Rockies are towering in view.
The second is big-horn sheep along the road - they are indifferent to cars and people.
The third is Lake Minnewanka (the auto-correct keeps wanting to make it Minnetonka :) ) - as with several lakes in the area, it is shockingly green - not from algae but from “rock flour,” i.e. ground up rock from glaciers whose chemicals create that effect (and/or by reflecting light - someone else may be able to explain it better than I).
I’ve also included a shot of myself at Lake Louise, which is still half frozen - as was I. :)