The chaotic image above is one recently generated by Millefiori!
A page describing Mandelbrot and Julia sets, along with Explorers on which you can point and click to get more refined images.
A page on Newton Basins, and a generation form to create them. Updated recently!
Some kaleidoscopes and a kaleidoscope applet.
A page describing tiling the Hyperbolic Plane, and an applet to generate hyperbolic tilings
A page on Wallpaper Groups.
A Little Gallery of Roulettes
Some Bowditch patterns, and other miscelaneous pictures
David E. Joyce
All the images here have something do with geometry and many
have to do with chaos.
A page describing
A page on
Some 
A page describing
A page on 
A 
Some