Heritage Unlocked is a new English Heritage series which aims to encourage visitors to explore some of our lesser-known sites. Each book covers one region of England, and will include features on the region's history, culture and character, as well as a concise but informative entry on each site, all fully illustrated in colour. OS maps, lists of useful websites and further reading, brief histories of each county, visitor directions to each site and information on joining English Heritage are also included. In a specially designed format - small square paperbacks with flaps - these new guides will appeal to general readers, new visitors and heritage enthusiasts alike. This book describes the essential features of free sites in the east of England. The sites themselves are often set in beautiful countryside, and range in date from the Iron Age to the eighteenth century. They include the earthworks which protected Iron Age Colchester, roman walls, the walls of a 'Saxon Shove' fort, the impressive remains of priories at Binham and Thetford, medieval castles, a hunting lodge, the 14th century Cow Tower in Norwich, a wayside cross, the chapel at Duxford, the remains of the 17th century mansion which inspired Bunyan's House Beautiful, the remarkable mausoleum of the de Grey family, and the elegant towers of Robert Adam's church at Mistley.