https://www.cnet.com/news/niagara-falls-park-freezes-into-otherworldly-ice-landscape/

Visitors to the falls are reveling in the exotic sights. Instagram user Inge Groot reported a temperature of -25 Celsius (-13 Fahrenheit) in a post on Monday showing a snow-covered view of the Canadian side of the falls.

While it looks like Queen Elsa of Arendelle could break out into song at any minute, the falls themselves aren't frozen solid. "Surface water and mist in the air turns to ice, but there is still plenty of water flowing," says the Niagara Falls tourism site.