Leaning Tower of Pisa Bells Terza 1473 From: Institue and Museum of the History of Science: Terza, cast in 1473, weight 300 Kg. (660 lbs.) From: "Leaning Tower of Pisa, A Very Detailed Artistic Description" : The two other bells are situated in the upper arcades. On South there is the bell called "Terza" (because it is the custom to ring it at the third canonical hour about 9 a.m.). It bears interesting black-letters recently deciphered by Professore Biagi: Messer Antollio of ]acopo Operaio MCCCCLXXIIII. (1474) Return to Leaning Tower of Pisa Bells Unofficial Leaning Tower of Pisa Home Leaning Tower of Pisa Information Leaning Tower of Pisa History Leaning Tower of Pisa Articles Leaning Tower of Pisa News Leaning Tower of Pisa Web Links Leaning Tower of Pisa Humor Leaning Tower of Pisa Gallery Website maintained by: Gary Feuerstein