About Marble Arch Originally built as the entrance archway to Buckingham Palace in 1827, by John Nash, who was influenced by the design of the Arch of Constantine in Rome. However, when the palace was extended in the 1840s the archway was deemed too small and thus moved to its present position, at the north-east corner of Hyde Park and the west end of Oxford Street, in 1851. The only people allowed to pass through Marble Arch are senior members of the Royal Family and the King’s Troop Royal Horse Artillery. The location is wonderful for reaching all inner-city areas of London, but also within the vicinity of London’s luxurious park.