Waller Mall, which runs between Rideau and George east of Dalhousie, was yarn-bombed on February 10th by Lowertown resident Greta Grip. The art installation, which is supported by the City of Ottawa, is meant to be up until the end of March. Greta recounts that while she was putting up the yarn sleeves, a man asked if he could take one tonight if he's cold. Greta, who is as warm and welcoming as her work, said yes. By the way, wasn't the sky an impossible blue today?