Nash, John (1752-1835), was an English architect, urban planner, and landscape gardener. Nash's designs played a major part in improving the architectural appearance of modern London. Under the patronage of the Prince of Wales, later King George IV, he replanned the Regent's Park area of London as a vast landscaped garden. This garden was broken up by wide streets bordered on each side by villas. Regent Street and Carlton House Terrace were completed between 1810 and 1830. But the remainder of his design was abandoned because of the cost. Nash's designs created such central locations in modern London as Piccadilly Circus, Oxford Circus, and Waterloo Place. Nash worked on a number of other projects in London, including Buckingham House (now Buckingham Palace) and the Marble Arch. One of his most famous projects was the Royal Pavilion in Brighton, which he transformed into a flamboyant structure topped by a series of onion-shaped domes like a palace out of the Arabian Nights.