Our Fall colours are here. I've taken a look at the Ontario Parks Colour Report HERE. Of course, our best Fall colours are further north. There isn't anything on the map in the Niagara Peninsula.
Isn't that a brilliant representation below? You can find the interactive map along with the description of the colours in each park.
We in Niagara are just at the start ofo the peak colours. The Niagara Escarpment provides our best viewing - Elora, Milton, Devil's Glen, Niagara along the river are all excellent. Brock's Monument is a highlight high spot for viewing, and there's a viewing point just below the Monument.
There is even a list of fall view lookout towers if one wanted to make that the theme of fall colours:
Temagami Lookout Tower in Temagami
Dorset Scenic Lookout Tower in Dwight
1000 Islands Tower in Landsdowne
Quinte West Sager Conservation Area Scenic Lookout
Elliot Lake Fire Tower in Elliott Lake
CN Tower
Parry Sound Tower Hill Lookout
Skylon Tower
Brock’s Monument
The Lookout Tower, Fort Frances
We have the hawk tower at Beamer Point. The view below is from that vantage point looking towards Niagara-on-the-Lake.
We have great autumn colours in Niagara. This was a little farther north, in Guelph. I have the newly released Topaz Impressions and this image has a painterly effect from the software.