Yarnbombing or graffiti knitting or guerrilla knitting is a type of street art which employs colorful knitted cloths rather than paints or other matterials.
Artist Juliana Santacruz Herrera decided to go with this technique and fill portholes and other cracks of Paris’s streets!
Streets of Paris has been repaired with colorful yarns and crochet fabrics.
Even thoufh this is not a permanent sollution, it is definattely bright and cheery way to improve on otherwise dreary conditions.
Have a look on Juliana Santacruz Herrera’s Flickr stream.