Norwich is a city on the River Wensum in East Anglia and lies approximately 100 miles north-east of London. It is the regional administrative centre for East Anglia and county town of Norfolk. During the 11th century, Norwich was the largest city in England after London, and one of its most important. It remained the capital of the most populous English county until the Industrial Revolution. The urban area of Norwich had a population of 213,166 according to the 2011 Census. Norwich is the fourth most densely populated local-government district in the East of England, with 3,480 people per square kilometre . In May 2012, Norwich was designated Englands first UNESCO City of Literature.