I always considered the severe asceticism of the Catholic Churches (notably not Orthodoxy) as a kind of conception. In true faith: plenty of gold should not interrupt one’s quite time with God. It was like this at Notre-Dame de Paris, Riga Cathedral, Milan Cathedral and Basilica of Saint Mary of the Flower. But nothing prevents these cathedrals be very different from the outside.
Refined and glamorous Milan Cathedral
Or bright and merry Florence Cathedral