Quattro Libri (and don't miss the astonishing views of Rome!).
The Spanish Royal Academy) one weaves through cloisters and exhibition spaces to come to the small temple, hence named the Tempietto.
Donato Bramante in 1502, the Tempietto was based on earlier Christian churches and ancient Roman temples creating one TINY perfect jewel box of symmetry.
The ceiling of the dome is decorated with gilt stars on a blue background. The ribs become more slender towards the center to fool your eye into thinking it is higher than it actually is.
HERE at Great Buildings Online.
Learn more about Renaissance proportioning at the Tempietto HERE.