A new online drawing tool Grid Paint was opened. You can draw using various types of grids (squared, triangular, hexagonal). Drawing in Grid Paint is something like pixel art, but in pixel art you have only square pixels. Here you have also triangular or hexagonal pixels. Moreover, every pixel may be flat or have concave or convex shape like diamond or jewel, which allow you to create peculiar images.
You can share your images with friends on Facebook or Google+ or download them in PNG or SVG format.
Original artworks of famous artists, which impossible figures was used in. See galleries of artworks by masters of impossible illusions such as M.C. Escher, Oscar Reutersvärd, Jos de Mey, Sandro del Prete. You can also also see gallery of spanish artist Vicente Meavilla Seguí which is frequently updated.
Here you can see video rolics and flash animations about impossible figures. You can perceive secrets how impossible triangle can be constructed. Some animations are based Escher's and Reutersvärd arworks.
The most comprehensive collection of wireframe and greyscale impossible images. Most of them are copies of Reutersvärd's artworks, but some copies created from paintings of other autors. My impossible figures can be found here too. There are 1050 images in collection now.
Here you can download computer programs which can help you to create your own impossible figures.
Look at the NEWEST program Impossible Puzzle 1.10 and the new version of the program Impossible Constructor 1.25.