This is a 3D illusion installation in front of the steps of the city hall in Paris, created by French artist François Abélanet and ninety helpers.
It’s called ‘Qui Croire?” which means “Who to Believe” in English.
When viewed from this particular angle, it looks like a large sphere globe. It required five days to created this installation and used 1200m2 of grass lawn, 300 m2 of “sedum” plant, and 650 m3 of straw and sand.