In 604 AD a cathedral was built on land donated by King Ethelbert by Justus, a missionary from Rome who accompanied St Augustine to convert the pagan southern English to Christianity. This early cathedral fell into disrepair and the present building was begun by Bishop Gundulf in the eleventh century on the same site. Today only the foundations of the Saxon cathedral survives.
The Norman Cathedral replaced the Anglo-Saxon building in the 11th century, it’s east end was replaced by the 13th century gothic quire and the transepts shortly afterwards. The Nave and east end of the crypt survive.