Marble Arch is a 19th-century white marble faced triumphal arch in London, England. The structure was designed by John Nash in 1827 to be the state entrance to the cour d'honneur of Buckingham Palace; it stood near the site of what is today the three-bayed, central projection of the palace containing the well known balcony.[1] In 1851 it was relocated and following the widening of Park Lane in the early 1960s is now sited, incongruently isolated, on a large traffic island at the junction of Oxford Street, Park Lane and Edgware Road. Admiralty Arch, Holyhead is a similar arch, even more so cut off from public access, at the other end of the A5.