This is an old and picturesque Scottish lighthouse which I believe was originally lit via a log fire, never an electric lamp. So there is only stonework, through which the setting sun just happens to be shining.
I had actually planned this picture long before by using a smartphone app that showed exactly where the sun would set on the days I was in the area. Very very fortunately it was a sunny day and I was in position at the right moment, perhaps less than a minute, when the sun shone through the lighthouse.