Southward from Berwick there is a wonderful, scenic and interesting stretch of coast containing fine beaches, interesting castles and the historic semi-island of Lindisfarne, whilst just out to sea are the Farne Islands, a great breeding area for seals and seabirds.
First comes Lindisfarne, not really quite an island - most of the time anyway. It is possible to drive over the causeway except at high tide so it does make sense to check when you can get there - AND BACK!
This is a really ancient site of Christianity, one of the earliest in England, seeking to introduce the religion in England from the 7th Century. The Celtic church of Northumbria rivalled that of Rome in much of England for some time.
The key buildings are the castle which you will have seen well before you get to Lindisfarne and the ruined priory, built as a Roman Catholic foundation in the 11th century. There was of course an earlier monastery associated with the Celtic church.
The castle is owned by the National Trust and is very well maintained. There is also an old harbour with terrific views of the Farne Islands.
The Farnes, real islands this time, are accessed from Seahouses [often a rough trip]. They are owned by the National Trust and are a noted haven for geese, gulls and auks as well as grey and common seals.
On the mainland, just about level with the farnes is Bamburgh with a spacious beach area and a castle. This is far from being a ruin; infact it is a home. It is also licensed for weddings and its fabulous aspect and views render it very popular.
Dunstanburgh Castle, further South, is very different; it was ruined in the Wars of the Roses and has been derelict ever since. it is reached by a considerable walk along the cliff top, either from Craston or Embleton and commands excellent views of the coast.
I must be something of a romantic at heart as I get much more from the shell of Dunstanburgh than from the superbly complete castle at Bamburgh!