The Denver Chalk Art Festival on Larimer Square is a FREE two-day street-painting festival. More than 200 artists spend hours during the weekend turning the streets of Larimer Square into a museum of chalk art. Artists, sponsors and spectators find it difficult to describe in words the splendid experience that Denver Chalk Art Festival creates. “Denver Chalk Arts” After the downpour we had on Friday, Artists were out early the second day of the event recreating what was lose from the rain the day prior.