Iron Accents, Kirkland's and Amazon.com sell wrought iron wall decor. Each retailer offers a broad range of designs, and pieces are generally priced based on size.
Iron Accents is an online retailer that offers cast iron wall plaques, wall silhouettes and metal signs. Most of its pieces are unfinished black or rusted metal. Available designs range from scrolls and fleur-de-lis to angels and smiling suns.
Kirkland's offers more colorful iron wall art that includes painted and distressed metal elements. It also offers lacquered and embossed pieces.
Amazon.com generally offers larger pieces that measure upwards of 48 inches long. The few smaller pieces include many decorative sconces and candle holders.