The Church of San Lorenzo in Florence had a chapel that served as the Medici family's tomb. Yet only Lorenzo de' Medici and Giuliano de' Medici were actually buried there. Michelangelo designed the brothers' tombs, each of which had a pair of sculptures, one male and one female, representing day and night, dawn and dusk.
The chapel's dome imitated the Pantheon. The difference was that the Pantheon's interior was circular, while the interior of the brothers' tomb was square, resulting in pendentives at the junction between the dome and the foundation below, similar to those in the Church of St. Mark.
This was not a distinctive feature of Byzantine architecture. Any building using this structure would have curved triangular sections.
Milan Cathedral also had a chapel. In the early Middle Ages, there had been two cathedrals in central Milan: the Church of Santa Tecla and the Church of Santa Maria. Each had its own Clock Tower and chapel.
In 1353, the collapse of the Clock Tower of the Church of Santa Maria damaged the facade of Santa Maria Cathedral. The Archbishop of Milan therefore proposed building a grander cathedral.
This also suited Visconti, the Duke of Milan, perfectly. Legend had it that he dreamed of a demon demanding that he build a cathedral in the demon's name, then showing him all manner of horrors and monsters from Hell. To redeem his soul and find peace, as well as to display his power, Visconti supported the archbishop's proposal. He had come from elsewhere and replaced the Della Torre family as lord of Milan.
During construction, the original Church of Santa Tecla, its chapel, and its Clock Tower were all demolished. Their materials were used to build Milan Cathedral, while the former site of the Church of Santa Tecla became the Grand