 Bath and North East Somerset has 663 Grade I listed buildings , one of the highest concentrations in the country , covered by about 100 English Heritage listings . The oldest sites within Bath are the Roman Baths , for which the foundation piles and an irregular stone chamber lined with lead were built during the Roman occupation of Britain , although the current building is from the 18th century . Bath Abbey was a Norman church built on earlier foundations , although the present building dates from the early 16th century and shows a late Perpendicular style with flying buttresses and crocketed pinnacles decorating a crenellated and pierced parapet . The medieval era is represented by the remains of the city walls in Upper Borough Walls . 
 Bath and North East Somerset <a href='got' title='1'><mark>has</mark></a> 663 Grade I listed buildings , one of the highest concentrations in the country , covered by about 100 English Heritage listings . The oldest sites within Bath <a href='drop_aux' title='2'><mark>are</mark></a>the Roman Baths , for which the foundation piles and an irregular stone chamber lined with lead <a href='uninflect' title='3'><mark>were</mark></a> built during the Roman occupation of Britain , although the current building is from the 18th century . Bath Abbey was a Norman church built on earlier foundations , although the present building dates from the early 16th century and <a href='uninflect' title='4'><mark>shows</mark></a> a late Perpendicular style with flying buttresses and crocketed pinnacles decorating a crenellated and pierced parapet . The medieval era is represented by the remains of the city walls in Upper Borough Walls . 
Bath and North East Somerset got 663 Grade I listed buildings , one of the highest concentrations in the country , covered by about 100 English Heritage listings . da oldest sites within Bath the Roman Baths , for which tdafoundation piles and an irregular stone chamber lined with lead was built during thdaoman occupation of Britain , although thedarrent building is from the 18th century . Bath Abbey was a Norman church built on earlier foundations , although the present building dates from the early 16th century and show a late Perpendicular style w/ flyin buttresses and crocketed pinnacles decorating a crenellated and pierced parapet . The daieval era is represented by the remains of the city walls in Upper Borough Walls .