USPS Castillo de San Marcos Priority Mail Postage Stamps

The Priority Mail stamp celebrates the oldest masonry fortification in the United States, the Castillo de San Marcos, in St. Augustine, Florida. The stamp art features a digital illustration of the fortress based on a contemporary photograph. With a view toward the northeast corner of the fortress, the artwork captures it in the golden glow of sunrise over Matanzas Bay. Art director Greg Breeding