Sao Paulo, Brazil
This guy's artwork can be considered as sculpture. He'd always been interested in unconventional materials, making artworks with earth, or wire, cotton thread, even going to using sugar, jam, little toy soldiers, etc. Although his subjects are varied, he usually creates portraits by pushing around the objects to make piles in different sizes.
Vik Muniz also works with paper, making mosaics, or collages. here are a few below.
After Van Gogh
Self-portrait
