NAGAI HIDEYUKI official site, the 21 year old prodigy from Japan identifies himself as an anamorphic artist, which is a style of art that stems from the early Renaissance. The style features techniques based on perspective, where an artist creates distorted images or drawings that are recognizable only when viewed in a certain way.
This amazing street painting, called “Dies Irae”, was created by Kurt Wenner in a medieval town square in Italy. Again, note that it is an anamorphic image - it only works from this viewpoint. If you walked around to the other side of the painting, it just would not work at all. Here, the human figure gives a sense of scale, as he peers into the abyss.