Shigeo Fukuda

Posters by the Japanese artist and graphic designer Shigeo Fukuda (1932-2009). Influenced by the minimalism of Swiss design, his work makes frequent use of optical illusions (he also created Escher-inspired sculptures). More here, and the last two images above are from Sandi Vincent's amazing Flickr stream.

From an obituary at the New York Times:

Mr. Fukuda was indeed a prankster throughout his life. To reach the front door of his house, on the outskirts of Tokyo, Mr. Chwast recalled, a visitor had to walk down a path to a door that appeared to be far away. In fact, appearances were deceiving because the front door was only four feet high. Inside, Mr. Fukuda would emerge from a concealed white door exactly the same color as the wall to offer the visitor a pair of red house slippers.