 Alberti's only known sculpture is a self-portrait medallion, sometimes attributed to Pisanello.Alberti was employed to design two churches in Mantua, San Sebastiano, which was never completed, and for which Alberti's intention can only be speculated upon, and the Basilica of Sant'Andrea.The design for the latter church was completed in 1471, a year before Alberti's death, but was brought to completion and is his most significant work.