Covent Garden’s Huge Balloon-Filled Cloud

French artist Charles Pétillon is synonymous with his use of white balloons, adding them to cars, golf courses and two-story houses for a humorous take on the mundane. Now, he’s installed his largest balloon-filled exhibition to date at London’s historic Covent Garden, joining an impressive roster of past artists including Jeff Koons, Damien Hirst and Banksy. Titled “Heartbeat,” the public artwork features a massive 54-meter-long …