text: The only major sections of the cathedral built later were the Cloisters , Chapter house , tower and spire , which at 404 feet ( 123 metres ) dominated the skyline from 1320 .
simplified: The only major parts of the cathedral built later were the Cloisters , Chapter House , tower and spire ( 1320 ) , which at 404 feet ( 123 metres ) dominates the skyline .