North America is experiencing its harshest cold snap in 24 years, so cold in fact that Niagara Falls has frozen over.
Both on the New York and Ontario sides of the waterfall visitors have been sharing incredible photographs of the falls. Photos of the falls have become a world attraction in recent days as wind chills there fell to as low as minus 14 degrees.
A quick look at the amazing pictures:
(Image Credits: AP, AFP, Reuters, others)