The sun rises over the banking district in Frankfurt, Germany, as snow falls on the outskirts on January 31, 2019. #

A Newfoundland dog sits on a bench as winter snow flurries hit Manhattan on January 30, 2019. #

The frozen American Falls are illuminated in Niagara Falls, Ontario, Canada, on January 30, 2019. #

Icicles hang from a monument of a Soviet soldier at the Soviet-heroes cemetery in Bucharest, Romania, on January 26, 2019. #

Pigeons rest on ice-covered tree branches in Bucharest, Romania, on January 26, 2019, after two days of freezing rain. #

A Kitewing sailor races across the frozen Newfound Lake in Hebron, New Hampshire, on January 27, 2019. #

A commuter walks through downtown Chicago in subzero temperatures during an extremely light morning rush hour on January 30, 2019. #

Pigeons huddle together in the snow during a winter storm in Buffalo, New York, on January 30, 2019. #

Ice forms patterns on the roof of a car in London, England, on January 30, 2019. #

A BMW motorbike is covered with snow and ice on top of the Feldberg mountain near Frankfurt, Germany, on January 29, 2019. #

Geese huddle in the water as the sun rises at the harbor in Port Washington, Wisconsin, on January 30, 2019. #

Drifting snow obscures a road near Mount Joy in Lancaster County, Pennsylvania, on January 30, 2019. #

A man wears shorts as he walks his dog in the snow on January 30, 2019, in Lancashire, United Kingdom. #

The Reflecting Pool sits frozen on the National Mall in Washington, D.C., on January 31, 2019, as the region experiences frigid temperatures. #

A snow-removal vehicle clears roads after heavy snowfall in Mus, Turkey, on January 30, 2019. #

A woman looks through the window of a house buried under snow in Savascilar village in Mus, Turkey, on January 31, 2019. #

People walk through a snow-covered forest on the Fichtelberg in the Ore Mountains in Oberwiesenthal, Germany, on January 25, 2019. #

Ice forms along the shore of Lake Michigan before sunrise on January 31, 2019, in Chicago, Illinois. #

A fox looking for food during tough winter conditions is seen near a settlement in Van, Turkey, on January 30, 2019. #

A man climbs up an artificial ice wall in a courtyard in Liberec, Czech Republic, on January 27, 2019. #

Icicles hang in front of a door at a bar in Mequon, Wisconsin, on January 30, 2019. #

Ice covers the Chicago River on January 30, 2019, in Chicago, Illinois. #

A red deer grazes in the snow on January 30, 2019, in Glen Etive, Scotland. #

A harbor light at Chicago's 39th Street Harbor is covered by ice on Lake Michigan on January 30, 2019. #

A student is dressed for subzero temperatures while walking to class at the University of Minnesota in Minneapolis, Minnesota, on January 29, 2019. #