Niagara Falls freezes over

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A partially frozen American Falls in sub freezing temperatures is seen in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National Weather Service has issued Wind Chill Warning in Western New York from midnight Wednesday to Friday. REUTERS/Lindsay DeDario (CANADA - Tags: TRAVEL ENVIRONMENT)

Niagara Falls is frozen. Reuters

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Sub-zero temperatures have caused the landmark to completely turn into ice. Reuters

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A partially frozen American Falls is seen from Niagara Falls Ontario

A partially frozen American Falls is seen in Niagara Falls, Ontario February 17, 2015. Temperatures dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday and the National Weather Service issued… Reuters

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A partially frozen American Falls in sub freezing temperatures is seen in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National… Reuters

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A partially frozen American Falls in sub freezing temperatures is seen in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National… Reuters

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A rainbow appears over the partially frozen American Falls in sub freezing temperatures in Niagara Falls Ontario

A rainbow appears over the partially frozen American Falls (R) in sub freezing temperatures in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on… Reuters

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Visitors view frozen Niagara Falls in Niagara Falls, New York February 17, 2015. Temperatures dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday and the National Weather Service issued a… Reuters

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A rainbow appears over the partially frozen American Falls in sub freezing temperatures in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday…. Reuters

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A snow-covered landscape is seen over the frozen Niagara Falls in Niagara Falls, New York February 17, 2015. Temperatures dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday and the… Reuters

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A partially frozen American Falls is seen in Niagara Falls, Ontario February 17, 2015. Temperatures dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday and the National Weather Service issued… Reuters

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A woman walks through Niagara Falls State Park in Niagara Falls, New York February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National Weather Service… Reuters

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A snow-covered landscape is seen around the frozen Niagara Falls in Niagara Falls, New York February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National… Reuters

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Visitors view Niagara Falls in sub freezing temperatures in Niagara Falls, New York February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National Weather Service… Reuters

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A rainbow appears over the partially frozen American Falls in sub freezing temperatures in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday…. Reuters