After the turn, look to the right and
you will see Marble Arch looking rather out of place on the traffic island. It
was moved here from its rightful home outside Buckingham Palace after it was
found to be a little too narrow for the Royal carriages to pass though
comfortably. There are two small rooms within the structure which, for many
years, the Metropolitan police used as a local office. The white marble of the
arch comes from the famous Carrara quarries in Italy.