My parents lived for many years in Shrewsbury, and my father was active in the local Wildlife Trust based just across from Shrewsbury Abbey (or the remains there-of).
The Wildlife Trust did at one point have a Cadfael Discovery Center but I'm not sure it still exists.
For anyone who is interested, see
http://www.virtual-shropshire.co.uk/...-list-2013.pdf for details of an upcoming Edith Pargeter weekend.
I believe it was Thomas Telford had some of the ruins of the Abbey demolished to allow construction of the A5 road.
PS: If anyone does go and attends any of the sessions at the Wildlife Trust, remember my father David Eric Thomas and all the pleasure he had working there.