Videos posted to social media this past week show massive silver orbs crashing through the streets of central London. The giant shiny spheres were part of an art installation called "Four World Set" by artist Tom Shannon. High winds from a storm swept the art installation away. The piece, composed of a stack of four chrome-colored spheres, was commissioned by electronic music duo Mount Kimbie and had just been unveiled the day before. On Instagram, Kai Campos of Mount Kimbie posted, "I'm absolutely gutted that more people won't get to see it this week."