Canada; one of the most beautiful places I have ever been. But once you drive (or walk) across the bridge to New York state, ouch!
The area around Niagra Falls is obviously a stunning place and well maintained for the tourists (we even took a photo of a piece of litter once, because it was the only piece seen at all on the Canadian side, and the pictures of The Falls itself never do it justice. I could happily have stayed there forever.
But once you’re over the border and in Buffalo… It’s a totally different world. It feels oppressive, and slightly dangerous. I really was not comfortable about parking the rental car there and leaving it unattended.
I’d go back to Canada in a heartbeat, but I’d be staying firmly on that side of the border next time.