Santa Croce, rebuilt for the Franciscan order in 1294 by Arnolfo di Cambio, is the burial place for the great and good in Florence. Michelangelo is buried in Santa Croce, as are Rossini, Machiavelli, and the Pisan-born Galileo Galilei, who was tried by the Inquisition and was not allowed a Christian burial until 1737, 95 years after his death. There is also a memorial to Dante, but his sarcophagus is empty.
It looks onto the Piazza Santa Croce, which is the site of the annual soccer game in medieval costume, the Calcio Storico.
You might give a look at the gallery in the whole, since all the photos are somehow interconnected...