The world's largest and longest 3D street painting is located in Nanjing, the capital of Jiangsu Province, China. It's called Rhythms of Youth and occupies an area of 27,986 square foot— 2737.5 m2. Its creator, famous Chinese artist Yang Yongchun, said it's a gift to the upcoming 2nd Summer Youth Olympic Games.
"It took my team more than 20 days to finish the painting on the ground. Every day, we worked on it from daybreak when we could barely tell the colors apart until it turned too dark to see anything".