At first glance, this mural at the Nuart Street Art Festival in Norway—reportedly the largest outdoor mural ever completed—doesn't seem all that big. That's until you see the next picture, of volunteers lying down on it for scale.
Holy crap. Yup, that's a big mural. The entire thing, all 21,000 square meters (226,040 square feet) of it, was completed over four days by French artists Ella & Pitr. Apparently, it's some sort of joke about King Olaf I of Norway.
Here's drone footage of the completed mural: