Just look at these beautiful murals of caged animals, painted by street artist ROA (who is known for his realistic large animal murals) for The North West Walls Festival in Belgium. The piece consists of 7 stacked containers, with 2 used for the base. Not only are these container canvases beautiful, they are poignant in their depiction of animals in captivity.

ROA Flickr page, story via
 http://www.mymodernmet.com