Norfolk, England, UK

Norfolk -  is a low-lying county in the East of England. Of the 34 non-metropolitan English counties, Norfolk is the seventh most populous, with a population of 850,800.  The county town is Norwich. Norfolk is the fifth largest ceremonial county in England, with an area of 5,371 km².
Based on Wikipedia-06.03.2011.

A card from Julie shows four castles in Norfolk: Rising, Acre, Bigod's Castle and Weetings.