Complex sentence: 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.
Split into simpler sentences: Bath Abbey was a Norman church built on earlier foundations. 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.