What is a large Christian church led by a bishop often called?

The story behind the answer

It’s the bishop’s principal church, defined by the presence of the cathedra—the bishop’s ceremonial seat—making it the administrative and liturgical heart of a diocese. From this seat, the bishop oversees clergy, celebrates major rites, and convenes the faithful for important feasts.

In the Middle Ages, these churches became civic landmarks and theological statements in stone. Romanesque and later Gothic designs—pointed arches, ribbed vaults, and flying buttresses—allowed soaring walls filled with stained glass that taught scripture to largely illiterate populations. By contrast, a basilica is either an architectural plan or an honorific title, an abbey centers on a monastic community, and a minster is a major church of monastic or collegiate origin, especially in England.