Paint-by-numbers is a popular method for painting city landscapes. The painters supply store will have all the materials needed to get started. All you need is a canvas, paint, brushes, and a little patience. Paint-by-numbers kits typically come with a pre-printed outline of the scene. The outline is usually divided into numbered sections. Each section corresponds to a different color. The painter simply needs to follow the numbers and fill in the appropriate color. Paint-by-numbers can be a fun and relaxing way to spend an afternoon. And when you're finished, you'll have a beautiful piece of art to hang in your home.