Basilica di Santa Maria degli Angeli e dei Martiri

In 1561, the then 86-year-old Michelangelo designed this hulking basilica in what was once the central hall of Diocletian's baths complex. Two parts of his design remain today: the cloister, accessible from the nearby Terme, and the great vaulted ceiling. The rest was redecorated in baroque style by architect Luigi Vanvitelli in the 18th century. Note the sundial, designed for the 1700 Jubilee to verify the Gregorian calendar and to tell the exact time.