The polar vortex created a winter wonderland at one of the world's most iconic locations when extreme temperatures froze parts of the famous Niagara falls on the US and Canadian border
Thu 9 Jan 2014 18.18 EST Last modified on Fri 14 Jul 2017 18.40 EDT
Visitors look at the frozen falls on the US side of Niagara Falls l Photograph: Dan Cappellazzo/Barcroft USA Share on FacebookShare on Twitter