Franklin W. Smith was an amateur architect and pioneer experimenter in poured concrete construction. His winter home, Villa Zorayda, was the first residence built in the Moorish Revival style in Florida, and the first poured concrete building in St. Augustine. Smith's concrete mix, which used crushed coquina shells as an aggregate, and his method of pouring it in successive levels, was adopted by Henry Morrison Flagler, a Standard Oil partner and Florida developer, for his nearby hotels and churches on an even grander scale. Villa Zorayda could also be considered the first example of fantasy architecture in Florida.