Buckingham Palace forms the architectural core of the palace was built for the first Duke of Buckingham and Normanby in 1703 to the design of William Winde. The style chosen was of a large, three-floored central block with two smaller flanking service wings. Buckingham House was eventually sold by Buckingham's natural son, Sir Charles Sheffield, in 1761 to George III for £21,000. Sheffield's leasehold on the mulberry garden site, the freehold of which was still owned by the royal family, was due to expire in 1774. Under the new Crown ownership, the building was originally intended as a private retreat for King
John Nash (architect) the Prince from 1815 to develop his Marine Pavilion in Brighton, originally designed by Henry Holland. By 1822 Nash had finished his work on the Marine Pavilion, which was now transformed into the Royal Pavilion. The exterior was based on Mughal architecture, giving the building its exotic form, the Chinoiserie style interiors are largely the work of Frederick Crace. Nash was also a director of the Regent's Canal Company set up in 1812 to provide a canal link from west London to the River Thames in the east. Nash's masterplan provided for the canal to run around the northern edge