With the Regent's backing Nash created a master plan for the area, put into action from 1818 onwards, which stretched from St James’s northwards and included Regent Street, Regent's Park and its neighbouring streets, terraces and crescents of elegant town houses and villas. Nash did not complete all the detailed designs himself; in some instances, completion was left in the hands of other architects. Nash was employed by the Prince to develop his Ocean Pavilion Palace in Brighton, originally designed by Henry Holland. By 1822 Nash had finished his work on the Ocean Pavilion, which was now transformed into the Royal Pavilion.