Fench artist, Alexis Facca founded the collective Paper Donut in 2009. The group specializes in paper and street art (Justine Ricaud, Fanette Guillouid, Benoît Brulbault are a few of the artists involved). One of the most interesting installations is their Anamorphic graffiti. These brightly colored geometric shapes on walls and buildings create evocative pieces. The collective’s work is part graffiti, part optical illusion, forcing the viewer to change how they view his projects in order to figure out the original shape. Check out a few of our favorite pieces. [PaperDonut]