One of my favourite spots for fall colours in Banff National Park is along the Bow Valley Parkway between Banff and Castle Mountain. There are some beautiful groves of aspen trees along the parkway that turn honey gold each autumn between September 15th and 30th, making for some spectacular landscape photography in the heart of the Rockies.
Watch for great stands of aspen to photograph near Hillsdale Meadows and by the Sawback turn-out.
Happy shooting!
John