(CNN) — It’s so cold, parts of Niagara Falls are frozen. The winter storm that has blanketed the Midwest in snow and turned the Northeast into a deep freezer has now brought the falls’ rushing waters to a halt in places. Visitors to Niagara Falls snapped pictures of the majestic sights and still waters Sunday. Emma Grafham told CNN she felt like she was in “Elsa’s castle,” referring to the character from the Disney movie “Frozen.” “There was even this […]