That looks great. I've just had a look through the towns - there's a lot to choose from. Shame I'm busy all w/e as there could have been a good ride or two out to see some of these. Hope it's on again next year.
I went down a deep air raid shelter yesterday. Quite fascinating and not the sort of place you'd normally be allowed to visit. It was a great tour and we were permitted to explore and wander all over the place. The basic premise of opening stuff up to the public is certainly to be applauded.