Artist Li Jiayue of China's Sichuan province paints optical illusions, like the sidewalk chalk artists who create 3D worlds on pavement, but on columns, poles, and trees (and sometimes buildings). His artworks are painted onto wrap-around canvas or onto the columns themselves, and he sometimes combines those techniques to enhance the illusion. Like the sidewalk art, Li's illusions can only be seen from one angle, but they create the mind-bending illusion that the column is bisected, with an open space between the parts. The background is painstakingly recreated to cause the viewer to see right through it, except for the interesting parts that float in the space between.
Li Jiayue's works have gone viral on Chinese social media, and are starting to leak out to the rest of the world. See a collection of his illusion artworks at Design YouTrust. -via Moss and Fog
It's all fun and games until someone /hasn't/ lost an eye.
They photograph well though...And are pretty. Art is subjective, and subverting and all. (also sublime. Less than lime. Lime beats art? Err.. I'm drifting off whatever point I may have had or been close to...)