Crenellations of Tantallon

You might have known that crenellation is the uppy downy bits on battlements. You can have a point if you did. To crenallate is to provide a castle or tower with crenellation.

Did you know the uppy downy parts also have proper names? The gaps are crenels or crenelles. The bits between are merlons. Here's a sign to prove I don't just make all this stuff up.

And here's a picture of a castle, showing crenallation, which was taken on our recent trip and is obviously the entire reason for choosing today's word of a week. It's called Tantallon - isn't that a fantastic name for a castle?

We got there early and had the place to ourselves for the first half hour. I really must work it into a story.