A broch is a very old kind of big round Scottish castle structure, with immensely thick double walls whixh have a narrow passageway between them. Nobody seems to know what that’s for – it might be an early form of cavity wall insulation. People lived in brochs and it seems likely they were defensive structures.

We’ve visited quite a few brochs and like them a lot. The one at Gurness is unusual both in that it’s not isolated, but surrounded by smaller stone houses and other structures (a small village really) and in the fact that it’s divided up into rooms inside. There’s even a loo!

Lots of interesting items were found inside the broch of Gurness, including some amazing, and huge, brooches. These are in the museum in Kirkwall, which is fascinating. We spent hours there one rainy day – and didn’t photograph a thing!