The Falls at Niagara have a special attraction in March/April. There is still ice floating in the river, and plunging over the falls. It was early April when I was there, some years ago. Goat Island was still covered in snow, the Maid of the Mist and the Tour behind the Falls was not yet operating, but the visitor centre on Goat Island was open. As was the police station. I've been there in summer, but this early visit was something special.
It was cold!!
Lifey