Suffolk fills the bulge of East Anglia between Norfolk and Essex, bordered on the east by the cold grey North Sea. The county is mostly flat, gently rolling, given to farming and silence. The highest point, Great Wood Hill, reaches only 128 metres. Five rivers cut down to the sea through estuaries: the Blyth, Deben, Orwell, Stour and Alde. Orford Ness, a long shingle spit, holds the Alde captive for miles before letting it spill out. Heaths called the Sandlings back the dunes. Inland, the chalk downland that sweeps from Dorset to the Yorkshire Wolds passes through the west of the county, lifting the only real hills. The county flower is the oxlip. The traditional epithet, despite Victorian sentimentality about it, is Silly Suffolk, where silly preserves the Old English word saelig, meaning blessed.

In 1939, in a field at Sutton Hoo above the River Deben, archaeologist Basil Brown uncovered the imprint of a 27-metre ship buried in the earth, its timbers long since rotted but their shadow preserved in the sand. Inside lay one of the richest treasures ever found in Britain: an iron helmet with garnet-and-gold inlays, a sword of state, silver bowls, shoulder clasps of cloisonne work, a lyre. The burial is almost certainly that of King Raedwald, who ruled East Anglia around 624. His son Sigeberht returned from exile in Frankish lands and became one of the first English kings to embrace Christianity. The helmet, reconstructed, is now an icon of Anglo-Saxon England. The treasures are in the British Museum; the field, still owned by the National Trust, lies quiet above the river.

Drive through Lavenham, Long Melford, Kersey, or Cavendish and the cottages glow a particular dusky terracotta colour: Suffolk Pink. The shade dates to the fourteenth century, when local dyers mixed limewash with whatever was at hand to bind the pigment: pig's blood and buttermilk, elderberries, sloe juice. Each batch came out slightly different. The villages take their pink seriously. In 2013 the chef Marco Pierre White painted his fifteenth-century hotel, The Angel, in Lavenham, the wrong shade of pink. The local council made him repaint it. Another homeowner was ordered to colour-match a Grade I cottage because, three centuries earlier, it had been part of a single building with the cottage next door. The colour is treated as living heritage. Anything else is just paint.

Suffolk grew rich on wool. In the late Middle Ages, Lavenham was briefly one of the wealthiest towns in England, and its over-engineered church and crooked timber houses still testify to it. When the cloth trade moved away, agriculture remained: wheat, barley, sugar beet, oilseed rape. Greene King brews in Bury St Edmunds. Adnams brews in Southwold. British Sugar processes the beet from 1,300 farms at its Bury factory. Newmarket, on the western edge, is the worldwide capital of thoroughbred racing, home to Tattersalls, the National Stud, two racecourses and a horse population that often outnumbers the human one. The Suffolk Punch, a stout red-chestnut draught horse native to the county, is now critically endangered. It appears on the Ipswich Town football club crest, a quiet memorial to a working animal that built the place.

The Suffolk coast is soft. London clay and crag underlie chalk, and the sea takes it back constantly. Whole villages have vanished into the water at Dunwich, once a major medieval port now lying in fragments under the waves. The shingle moves. The estuaries shift. At Aldeburgh, the composer Benjamin Britten founded a festival in 1948 that became one of the great events of English classical music, now centred at Snape Maltings, a converted Victorian malt house. RAF Lakenheath and RAF Mildenhall, both leased to the United States Air Force, sit in the dry country to the west. F-15s lift off into the same sky that Anglo-Saxon longships once sailed under. The Port of Felixstowe, the largest container terminal in the United Kingdom, handles ships taller than the cliffs they pass.