Federico da Montefeltro
In 1463, during the siege of the city in order to expel its lord Sigismondo Pandolfo Malatesta, the artillery of Federico da Montefeltro, destroyed the attic of the monument. The fallen fragments were reused in the construction of the adjacent church and loggia of Saint Michael. The original appearance of the gate is recorded in the Renaissance bass relief carved on one side of the facade of the church.