 The Sistine Chapel is 40.9 metres long and 14 metres wide. The ceiling rises to 13.4 metres above the main floor of the chapel. The vault is of quite a complex design and it is unlikely that it was originally intended to have such elaborate decoration. Pier Matteo d 'Amelia provided a plan for its decoration with the architectural elements picked out and the ceiling painted blue and dotted with gold stars, similar to that of the Arena Chapel decorated by Giotto at Padua.
