Trichome October 14, 2016 thcscience_admin Stained glass in Christ Church Cathedral, Oxford. The chapel of Christ Church also serves as a cathedral for the Diocese of Oxford, a unique combination of university chapel and cathedral. Credit: Akoliasnikoff Stained glass in Christ Church Cathedral, Oxford. The chapel of Christ Church also serves as a cathedral for the Diocese of Oxford, a unique combination of university chapel and cathedral.