According to this article, this is the world’s largest oil painting at 310 square meters (3,336 square feet), or 20 X 15 meters (65.5 X 49.2 feet). Quite epic, isn’t it!
In 2006, the Guinness World Records confirmed that at 86,000 square feet, Mother Earth by Swedish artist David Aberg was the world’s largest painting by a lone artist.