 A snow-covered landscape is seen around the frozen Niagara Falls in Niagara Falls, New York February 17, 2015 (Photo: Reuters)
 Tourists, framed by ice-encrusted branches, walk along the Niagara Gorge at Niagara Falls, Friday, Feb. 20, 2015 in Niagara Falls, N.Y (Photo: AP)
 Visitors look over masses of ice formed around the Canadian 'Horseshoe' Falls in Niagara Falls, Ontario, Canada, Thursday, Feb. 19, 2015 (Photo: AP)
 Masses of ice form in the lower Niagara River and around the American Falls as seen from Niagara Falls, Ontario, Canada, Thursday, Feb. 19, 2015 (Photo: AP)
 A partially frozen American Falls is seen in Niagara Falls, Ontario February 17, 2015 (Photo: Reuters)
 A family walks through the snow near the frozen Niagara Falls in Niagara Falls, New York February 17, 2015 (Photo: Reuters)
 Visitors view frozen Niagara Falls in Niagara Falls, New York February 17, 2015 (Photo: Reuters)
 Visitors view Niagara Falls in sub freezing temperatures in Niagara Falls, New York February 17, 2015 (Photo: Reuters)
 The Niagara River rushes over the brink of the American Falls on Friday, Feb. 20, 2015 in Niagara Falls, N.Y (Photo: AP)
 The tower in Niagara Falls, Ontario is flanked by the misty brink of the American Falls as viewed from Niagara Falls, N.Y., on Friday, Feb. 20, 2015 (Photo: AP)
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