TIL that for 1308 years (128 CE - 1436) the dome of the Pantheon has been the largest dome in the world. The new record was then held by the dome of Florence Cathedral for 435 years (1436 - 1871). They both still hold the record for their "category" (unreinforced solid concrete and brick and mortar)
https://en.wikipedia.org/wiki/List_of_largest_domes?wprov=sfla1
