UK - London - Petroc Sesti's Optic Sphere artwork in the City

Distorted faces of a couple seen through Petroc Sesti's art instillation called Time Fold in Great Helen's Square, in the City of London. Passers-by stop to take pictures with their smartphones as the magnified heads of others are seen through the giant prism's optics. Petroc Sesti is a London based British artist and Time Fold bends light like a prism, hypnotising the viewer by reflecting on its ever-changing spiral motion. (Photo by In Pictures Ltd./Corbis via Getty Images)