I was up in the Orkney Islands this week, I haven't been up for a few years. One of my favourite Scottish island groups with a rich history. Picts then Vikings, Orkney was part of Norway until 1468 when it was effectively ceded to Scotland as part of Queen Margaret's dowry.
This is unsurprisingly a maritime story that includes the naval base of Scapa Flow, home to the fleet in both world wars. I picked up James Miller's book while up there, an an excellent and well illustrated read on the bumpy flight back.
A famous WW2 incident was the sinking of the battleship Royal Oak by U47 commanded by Gunther Prien. The loss of life is commemorated in the cathedral.
There is a small museum in Kirkwall with a few military items of interest. A new museum focusing on Scapa Flow will open soon at Lyness. Stromness also has a fine maritime museum.
And finally the Bishops and Earls palace.
Well worth a visit.