Following the general acceptance of Portland Cement in the second half of the 19th Century, considerable amounts of decorative unit masonry were made from this material. The needs of the fashionable Greek Revival and other highly decorated architectural styles helped in the development of a successful artificial stone industry in Canada. This material could be as intricately detailed and made equally strong and durable as natural stone, while the price was much lower. The Roman Stone Company of Toronto cast its products in sand-molds instead of the customary metal molds. The absorbed moisture in the sand ensured the proper curing of the concrete and created a natural stone-like surface texture. Several major buildings were made from this material around the turn of the century. This article describes the manufacturing process and publishes photographs of buildings made from Roman Stone. -- AATA