City Sightseeing operate a single route covering much of the city centre including the harbourside, downtown, financial and distillery districts as well as travelling out to Casa Loma on the edge of the city centre
Tours have a live guide for the whole of the route so the commentary is different depending on the guide you have
There is a mix of modern open-top buses and some elderly converted former London buses - which create interesting boarding issues given Canada drives on the opposite side of the road