McDonald's Is Testing Its Biggest Burger Ever. Here's Where the Nearly 1-Pound 'Big Arch' Is Available. McDonald’s announced the “Big Arch” — a new burger that weighs almost one pound — during its July 29 earnings call. Previous Article Airbnb and Vrbo Often Have Wildly Different Prices for the Same Listing. This Entrepreneur Built a Platform to Find You the Best Deal. Next Article Mark Cuban Slams Kevin O'Leary on Social Media After TV Appearance: 'Take This Interview Out Behind the Barn'