The Philadelphia Bourse Building, the first commodities exchange in the United States, was completed in 1895. The building was one of the first steel-framed buildings to be constructed. Three types of masonry were used on the facade: Carlisle redstone, Pompeian buff brick and terra cotta. Inside were large columns and pilasters leading to a balcony surrounding the main floor. Bow-top girders were used to support a skylight at the third floor.