The vestibule of the Laurentian Library has Mannerist features which challenge the Classical order of Brunelleschi's adjacent church. Michelangelo's redesign of the ancient Capitoline Hill included a complex spiralling pavement with a star at its centre. Michelangelo's design for St Peter's is both massive and contained, with the corners between the apsidal arms of the Greek Cross filled by square projections. The exterior is surrounded by a giant order of pilasters supporting a continuous cornice. Four small cupolas cluster around the dome.