The above image is an example of public art. From the looks of things I would guess that it is also probably impromptu public art. This is art created freely and spontaneously.
Another example of this type of art was posted in the New York Observer . This story was about an abandoned area of Long Island. Artists took over and made it their own. The full story can be read here.
Spontaneous creation is good for artists and non-artists alike. I think it opens the mind and frees space from random thoughts. The creativity also offers an opportunity to grow in terms of expression. Your thoughts?