Terracina was built in 1850-1851 by Rebecca Lukens for her daughter, Isabella Lukens Huston, and Isabella's husband, Dr. Charles Huston, reflecting the successful growth of the Brandywine mill. Constructed in the Country Gothic style made popular by American designers A.J. Davis & A.J. Downing, its exterior features peaked wall dormers with tall finials, diamond-paned lancet windows, and a large overhanging roof cornice with curvilinear bargeboards cut in Gothic tracery. A two-story Renaissance Revival bay was added to the south side of the house in 1875. After the Lukens iron business was incorporated in 1890, Dr. Huston became the firm's first president. Terracina links the 18th-century Brandywine Mansion with the more substantial late 19th- and early 20th-century buildings that later became its neighbors. It remained a family residence until 1985 and is now owned by the Graystone Society, which has undertaken its restoration and preservation.