Late last week, a bitter cold snap that swept across the U.S. brought temporary chaos to Chicago’s south loop when a sprinkler system failed atop a 21-story hotel and storage facility. Water cascaded down a fire escape and quickly froze into a tower of ice. Street art photographer Andrew Hickey stopped by and captured some shots of the amazing sight before it was cleared up a few hours later.

Source: A Top Floor Sprinkler Leak Creates a 21-Story Tower of Icicles on a Chicago Fire Escape