3D painting is a creative art technique that creates the illusion of depth and dimension on a flat surface. Although it's painted on walls, paper, or streets, the result looks incredibly real—like you could walk into it or touch it. Artists use perspective, shadows, and lighting to trick the eye, making the artwork "pop" out of the surface. From street murals to gallery pieces, 3D art turns simple spaces into mind-blowing experiences that play with your perception.