Castle Design artisans hand-craft classically inspired architectural fireplace mantels and shelves featuring historical, ornamental and traditional patterns in a gypsum based plaster reinforced with natural hemp fibers for strength and durability. Built in and installed across the United States of America in residential and commercial applications. We offer a broad selection of mantels, which feature among other elements acanthus leaves, scrolls, volutes, flutes, egg and dart moulding details, greek keys, shells and decorative spandrels and friezes.