Skylight over Michelangelo’s David, Galleria dell’Accademia di Firenze, Florence, Italy. Designed by architect Emilio de Fabris and completed in 1882.as part of move of statue into the Galleria.in 1873. 

Side chapel ceiling, Baroncelli Chapel, by Taddeo Gaddi between 1328 and 1338, Basilica di Santa Croce, Florence, Italy.

Crossing Dome, The Duomo, Florence, Italy.  The painting in the enormous dome, The Last Judgment,  covers 3,600 metres (38 750 ft) of painted surface. It was started in 1568 by Giorgio Vasari and Federico Zuccari and completed in 1579.