Duomo
caption: Katedral Firenze
caption: Katedral Speyer , Jerman
caption: Katedral Milan , Italia
caption: Katedral Siena , Italia
caption: Katedral Salzburg , Austria
caption: Katedral Santo Henry, Helsinki , Finlandia
caption: Katedral Mainz , Jerman
caption: Katedral Worms , Jerman
caption: Katedral Aachen , Jerman
caption: Katedral Frankfurt , Jerman
caption: Katedral Pisa , Italia
caption: Katedral Santo Bavo, Haarlem , Belanda