How about the west country, always a beautiful place to be, but we are all locally bias in that respect.
My Mahal says she watched the new Robin Hood film, so when she comes over we are going to go to some 'real' castles. A really good one for us 'southerners' is Arundel Castle. Also being close to Wales, there are several good ones there. Stone Henge is good, but a shame you cannot get right up to the stones these days.

I told my mahal this morning that I will take her to the beach fishing one night, she was excited about that,then I told her it will be so cold that she will lose the feeling in her feet and hands, something she has never experienced before Warming up is always fun though