This is a picture of a seaside town in June 1966. Although there is no location noted on the slide mount of this cardboard Kodachrome, it looks like Cornwall with the narrow streets winding down to the sea - it would be great to find out exactly where. If you recognise it please let me know with a comment below.
Update: Russ points out that this is Clovelly in North Devon - I've added the location to the Metadata. Thanks Russ
This is Clovelly, north Devon