Antipope Felix V
In 1502 he commissioned a library with access from an aisle of the Duomo di Siena that was intended to house the library of humanist texts assembled by his uncle. Francesco commissioned the artist Pinturicchio to fresco its vault and ten narrative panels along the walls, depicting scenes from the life of Aeneas Silvius Piccolomini. Its iconography illustrating the donor's career gives an edited version of Pius II's life, passing over his former support of the Antipope Felix V. Though Pinturicchio labored for five years, the books never reached their splendid destination; yet the Piccolomini Library is a monument of the High Renaissance in Siena. Some of Pope Pius III's most famous portraits can be viewed in the Louvre Museum.