When we still lived in Lancashire, we made a trip to Shropshire to visit my uncle and his family.  As part of the visit, we went to Ironbridge.  For those not familiar with industrial architecture, this is a significant place for the bridge made of iron (you’d never have guessed) that was a major innovation at the time.  There is a great museum nearby which has old buildings and forging/casting techniques still practiced.  Here is a view of the bridge itself and the steeply sided river valley that required it.  Maybe we will get back there at some point on a future trip.  We have friends that aren’t so far away!