The basilica of San Crisogono was one of the original tituli of Rome and is thought to have been originally built in early fourth century by Pope Sylvester I and then later rebuilt in the twelfth century and then once more renovated under the patronage of Cardinal Scipione Borghese during the seventeenth.
The outside is fairly typically seventeenth century Roman form with the (unusually spired) Romanesque bell-tower dated to the twelfth century renovations.
A baroque coffered ceiling is also present in the basilica which depicts "The Glory of St. Chrysogonus"
Beneath the present day basilica are a series of excavations which, like at San Clemente, impressively reveal to us the earlier basilica's remnants. In the midst of these are still visible the various frescoes that are dated to the seventh to eleventh centuries. Also still visible in the excavations are the apse and the location of the original shrine to the martyr Crisogono.
Decorative stone flooring can be found and many beautiful sarcophagi were also discovered during the excavations.