It's cold as all hell at Niagara Falls on the U.S.–Canadian border, with temperatures plummeting to -13 on Monday. Combine that with a wind chill that dropped to a shovel-to-the-face -25 this week, and it's no surprise that one of humanity's purest natural wonders turned into a winter wonderland. The seasonal beauty meter is turned all the way to 11, but you should definitely wait until the spring to take a Maid of the Mist tour.
Photo via Bud/Flickr (CC BY-SA 2.0)