Battistero di San Giovanni (Florence) in the context of "Holy Saturday"

Bronze is the most popular metal for cast metal sculptures; a cast bronze sculpture is often called simply "a bronze". It can be used for statues, singly or in groups, reliefs, and small statuettes and figurines, as well as bronze elements to be fitted to other objects such as furniture. It is often gilded to give gilt-bronze or ormolu.

Common bronze alloys have the unusual and desirable property of expanding slightly just before they set, thus filling the finest details of a mould. Then, as the bronze cools, it shrinks a little, making it easier to separate from the mould. Their strength and ductility (lack of brittleness) is an advantage when figures in action poses are to be created, especially when compared to various ceramic or stone materials (such as marble sculpture). These qualities allow the creation of extended figures, as in Jeté, or figures that have small cross sections in their support, such as the equestrian statue of Richard the Lionheart.

Giotto's Campanile (/ˌkæmpəˈniːli, -leɪ/, also US: /ˌkɑːm-/, Italian: [kampaˈniːle]) is a free-standing campanile (bell tower) that is part of the complex of buildings that make up Florence Cathedral on the Piazza del Duomo in Florence, Italy.

Standing adjacent to the Basilica of Santa Maria del Fiore and the Baptistry of St. John, the tower is one of the showpieces of Florentine Gothic architecture with its design by Giotto, its rich sculptural decorations and its polychrome marble encrustations.

Bernardo Cennini (Italian: [berˈnardo tʃenˈniːni]; 1414/15 – c. 1498) was an Italian goldsmith, sculptor and early printer of Florence. As a sculptor he was among the assistants to Lorenzo Ghiberti in the long project producing the second pair of doors—the Doors of Paradise—for the Battistero di San Giovanni. He produced the first book printed at Florence. The painter and author of a famous book on the crafts, Cennino d'Andrea Cennini, was a member of the same Florentine family.