For 16 days straight, from dawn to dusk, five highly determined Montreal-based artists (who make up the artist run collective (A’shop) worked on a graffiti mural of a Mother Nature-esque Madonna or a modern-day version of Our Lady of Grace.
heavens to betsy
The Harmonia Macrocosmica is a star atlas written by Andreas Cellarius and published in 1660 by Johannes Janssonius. You can see close-ups of this fascinating document
The sodaconstructor site is one of the weirdest I have ever seen. Someone has programmed an Erector-Set-type designing program that lets you build strange geometrical shapes and them animate them! Look at the examples for an idea of how it works—then prepare to spend hours building your own little odd creatures.
Akiyoshi’s illusion pages is a collection of truly amazing geometrical illusions created by a psychology professor in Japan. Note the disclaimer at the top - ‘if you start to feel dizzy, you had better leave.’