BBC Merlin Filming Locations

I've been asked a few times to identify which Merlin Locations are worth visiting in their own right, so that a Merlinian visiting with non-fans can be sure they're taking their friends to a place that will be interesting to them above and beyond the filming connection.

My question to the comm isn't so much about identifying which sites fit that criteria - because I think that's probably fairly clear. My question is what shortish tag can I create to identify the relevant locations, that will convey the idea. I don't mind also explaining it somewhere, but it should be fairly self-explanatory, too.

All I've got is 'worth a visit in its own right' which just seems too long and wieldy.

Gosh. All these words about such a minor detail! I am feeling a tad uncreative today. :-(