Standing in the centre of the pretty market town of Hexham is the abbey that dates from the 12th-13th centuries. The building is built from a reddish stone (sandstone?) which time has only served to improve.
The town itself is an excellent place to spend a few days due to its proximity to Hadrian's Wall, the north Penines and Newcastle.
The surrounding countryside is beautiful.
The oldest prison in England dates from the 14th century. Today it is a museum that covers archaeology, armour, weapons and local history.
Just a couple of miles outside Hexham you can pick up Hadrians wall. A UNESCO world heritage site built under the orders of the Roman Emperor Hadrian in the first century AD it runs across the breadth of England from Solway Firth to the Roman Segedunum at Wallsend (I never put 2 & 2 together until I went to Wallsend - Walls End!). Although much has been lost over the years there is still plenty to see.