Gary, back in WW2 there was a real fear of invasion. This, it was assumed, would take place on low lying areas and beaches so huge concrete beach light shelters were built to house searchlights. These would illuminate beaches as enemy troops landed. Such items are quite rare now having been battered by nature for almost a century. They are stark and quite threatening especially when still on a family beach.
Thank you for your comments Gary. This is not ignorance. This is an enquiring mind. Very different concepts.