Vacation 2025

My family and I are travelling to Ontario this summer. It will be my first time in Canada and my step daughter’s first time there too. We will be staying in Hamilton and hiring a car. I was wondering if there is any specific places to go and things to see? We are definitely doing a trip to Niagara Falls but any other suggestions would be great please for a first timer in Canada. (Tips and secrets secrets would be helpful too)