John Nash (18 January 1752 – 13 May 1835) was a British architect responsible for much of the layout of Regency London under the patronage of the Prince Regent, and during his reign as George IV. Nash was also a pioneer in the use of the Picturesque in architecture. His best-known buildings are the Royal Pavilion, Brighton, and Buckingham Palace (though the facade facing The Mall is an early 20th-century remodelling by Aston Webb of an 1850s wing by Edward Blore, and thus is not Nash’s work).