Northumberland
The county is noted for its undeveloped landscape of high moorland, a favourite with landscape painters, and now largely protected as a National park. Northumberland is the most sparsely populated county in England, with only 62 people per square kilometre. This is mainly because the large cities of Newcastle upon Tyne and Tynemouth were joined to Gateshead and Sunderland in the metropolitan county of Tyne and Wear.