The name Piazza dei Miracoli was coined by the Italian writer and poet Gabriele d'Annunzio who, in his novel Forse che sì forse che no (1910), described the square as the "prato dei Miracoli," or "meadow of miracles".
It is better known as Piazza Del Duomo, and I have already written about it here. As I have been here while working on the ship here is a little reminder - as a tour escort I had access to the cathedral but not the tower. There was a tiny bit of free time but not enough to explore the rest of Pisa - and there was a lot to see, judging from what could be glimpsed from onboard a tourist train.
Grazie Chiara :)