In 1910, the Guastavino Company was actively working on both Grand Central Terminal and Pennsylvania Station (pictured here). Guastavino vaulting provided stations architects with an efficient structural solution that gave the impression of solidity and permanence. The structural tile also served as an attractive decorative finish to expansive structures. Pennsylvania Station and Grand Central Terminal, two New York City stations represent the highest achievements of American railroad architecture of the twentieth century, also serve as iconic symbols of the Guastavino Company's range of work. Courtesy of Avery Architectural and Fine Arts Library, Columbia University