aerial photograph of Folkestone Harbour Kent England UK with Folkestone Harbour Arm in the foreground. The pier and Folkestone harbour, which were built in 1809 by Thomas Telford. The Outer Harbour Pier was added in1861-3 by the South East Railway Company who used it for the steam packet business to France. The pier was extended 1881 to 1883 and again in 1897. A Lighthouse was added to the end of the pier which is now Grade II listed.