Norwich is considered to have a wealth of historical architecture. The medieval period is represented by the 11th-century Norwich Cathedral, 12th-century castle (now a museum) and a large number of parish churches. During the Middle Ages, 57 churches stood within the city wall; 31 still exist today.[1] Most of the medieval building is in the city centre. From the 18th century the pre-eminent local name is Thomas Ivory, who built the Assembly Rooms (1776), the Octagon Chapel (1756), St Helen’s House (1752) in the grounds of the Great Hospital, and innovative speculative housing in Surrey Street (c. 1761). Ivory should not be confused with the Irish architect of the same name and similar period.

The 19th century saw an explosion in Norwich’s size and much of its housing stock, as well as commercial building in the city centre, dates from this period. The local architect of the Victorian and Edwardian periods who has continued to command most critical respect was George Skipper (1856-1948). Examples of his work include the headquarters of Norwich Union on Surrey Street; the Art Nouveau Royal Arcade; and the Hotel de Paris in the nearby seaside town of Cromer. The neo-Gothic Roman Catholic cathedral on Earlham Road, begun in 1882, is by George Gilbert Scott Junior and his brother, John Oldrid Scott.

The city continued to grow through the 20th century and much housing, particularly in areas further out from the city centre, dates from that century. The first notable building post-Skipper was the city hall by CH James and SR Pierce, opened in 1938. Bombing during the Second World War, while resulting in relatively little loss of life, caused significant damage to housing stock in the city centre. Much of the replacement postwar stock was designed by the local authority architect, David Percival. However, the major postwar development in Norwich from an architectural point of view was the opening of the University of East Anglia in 1964. Originally designed by Denys Lasdun (his design was never completely executed), it has been added to over subsequent decades by major names such as Norman Foster and Rick Mather.