Cast iron
Cast iron was also used for Maryport Lighthouse, Cumberland, in 1834. In 1836, the lighthouse at the Town Pier, Gravesend, Kent, was built from cast iron. In 1842, two cast-iron leading lights were erected at Aberdeen, with elegant tapering octagonal towers and a smooth external face. At Sunderland, another well-known example was built on the pier head in 1856.