The patron saint of Monsummano Terme is Holy Mary of the Fontenova, celebrated on 9 June.
In 1969 the town was visited by the British singer-songwriter David Bowie, still at the start of his career — at that time he was still finishing recording the album «Space Oddity» — who took part in the International Record Festival, an annual town event. Monsummano Terme also holds the Castello di Monsummano Alto and the church of San Leopoldo.