The whole seems governed by one constructive thought, projected as a perfect unity of composition.[63] A later work of Giovanni Pisano was the pulpit executed for the cathedral of Pisa, now unfortunately broken up.

An interesting fragment, one of the supporting columns of the octagon which formed the body of this structure, still exists in the museum of the Campo Santo.

It is an allegorical statue of Pisa.

The Ghibelline city is personified as a crowned woman, suckling children at her breast, and standing on a pedestal supported by the eagle of the Empire.

She wears a girdle of rope seven times knotted, to betoken the rule of Pisa over seven subject islands.