Usually the Maid of the Mist ferries tourists into the spray churned up by 2.3million gallons of water crashing over the Niagara Falls each second. But the ice below is too thick for any tour boats to break through since the Niagara River,

Stunning footage has been released of Niagara Falls covered in snow and ice after a period of extreme cold weather. Despite appearances, the water hasn't fully frozen. It continues to move beneath the sheet of ice.

Usually the Maid of the Mist ferries tourists into the spray churned up by 2.3million gallons of water crashing over the Niagara Falls each second. But the ice below is too thick for any tour boats to break through since the Niagara River,

The world's most iconic waterfalls sees millions of visitors every year - but this week they are being treated to a very rare sight.