This is usually described as a lighthouse, though clearly it has never "housed" anybody. I thought that the correct term was a beacon, but in fact it is known as a "minor light". This solar-powered version was installed in 2001, and its predecessor is now on display at Sumburgh Head - see [[5023415]].
Uploaded to Geograph by David Purchase on 14 June 2016
Photo © David Purchase, 14 June 2016. Licensed for reuse under this Creative Commons licence