One visit to Niagara Falls is probably enough
I skipped Niagara Falls earlier in the post sequence so I’ll tuck it in now. I spent a couple of nights there at the start of my trip after leaving Toronto. With the exuberance of someone early in their trip I packed in as much as I could. There is loads of stuff to see, both in and away from the townships.
It is a place of interesting contrasts. My rather shabby hostel was based in the original N.F. township which is a relatively old and worn place about half an hour scenic walk away from the falls and the newer ‘tourist end’. Clifton Hills is where the majority of tourists are catered for on the Canadian side, but big tourism seemed to have sent it into tacky overdrive. Some descriptions liken it to a mini Vegas but that almost sounds a bit complimentary.
But the natural attractions are what people go there for. The falls, three in total, are stunning. From the Canadian side the Maid of the Mist boat tours get you up close to the Horseshoe Falls. The power and noise is incredible and you (and your camera) quickly become thankful for the dorky waterproof coverings they give you. The American and Bridal Veil Falls are accessed from the USA side. Along the River Road and Niagara Parkway are various viewing places and walkways and other attractions.
While there was a lot to appreciate it was overall a bit of a funny place and I left there with no desire to return. Never say never though eh?

Given my employer prior to the trip (and since as it's turned out) I took the opportunity to tour through this power station when I stumbled upon it