Shropshire Hills are an Area of Outstanding Natural Beauty. There is also the Shropshire Hills Discovery Centre at Craven Arms and within a mile of Stokesay Castle so they say. Acton Scott Historic Working Farm is a great day out but it probably won't be open now until easter.
We used to pitch up at the Caravan Club's Much Wenlock site but the lease expired this year and the site is now closed. Diamond Dave operates down at Telford and so does Travelworld. Both recommended Severn Gorge Caravan Park some years ago; I've never been but it is handy for both businesses, Ironbridge and associated museums - Blist Hill Victorian Town museum is a good day out if you like retro.
And if you are in for a challenge, try climbing the Wrekin but check out parking because there isn't much and it can get busy.
Ludlow is a gastronic delight and for those who like castles, look no further. It was described by John Betjeman as the loveliest town in England. There is a Morris leisure have a caravan site on the outskirts - pricey but good - as well as one at Shrewsbury.