The Spanish Colonial Revival-style Casa del Herrero (House of the Blacksmith) was designed by George Washington Smith for George Fox Steedman and his wife Carrie Howard Steedman, with the majority of construction being finished in 1925. A multitude of antiques, such as metal work, tiles and stone carvings were purchased in Spain and other parts of Europe and were incorporated in the house and gardens. The original design plan for the garden was provided by Ralph Stevens but both the house and garden were elaborated upon throughout the 1930s by a group of innovators and at the direction of Steedman. This group included architects George Washington Smith and Lutah Maria Riggs, landscape architects Ralph Stevens, Lockwood de Forest and Francis Underhill, and antiquarians Arthur and Mildred Byne. Together they created a cohesive whole of Mediterranean architecture that remains unaltered to this day. Defining features include the Andalusian-style house, multiple Moorish-style tiled fountain systems, citrus orchards, perennial borders, a dominant axial vista, and a cactus (or Arizona) garden. The property became a National Historic Landmark in 2009.