Niagara Falls freezes

Pieces of ice flow over the Canadian Horseshoe Falls in Niagara Falls, Ontario, Canada, Feb 19, 2015. [Photo/IC]

Masses of ice forms around the Canadian Horseshoe Falls in Niagara Falls, Ontario, Canada, Feb 19, 2015. [Photo/IC]

Visitors look over masses of ice formed around the American Falls, US, Feb 19, 2015. [Photo/IC]

The sun rises over masses of ice formed around the Canadian Horseshoe Falls in Niagara Falls, Ontario, Canada, February 19, 2015. [Photo/IC]

Ice forms on a statue of inventor Nikola Tesla at Niagara Falls, Canada, February 20, 2015. [Photo/IC]

Pieces of ice flow over the Canadian Horseshoe Falls in Niagara Falls, Ontario, Canada, Feb 19, 2015. [Photo/IC]

Masses of ice forms around the Canadian Horseshoe Falls in Niagara Falls, Ontario, Canada, Feb 19, 2015. [Photo/IC]