Original: At each end of the narthex is a rather theatrical space framed by ionic columns in each of which is set and equestrian figure , Charlemagne by Cornacchini ( 18th century ) to the south and Emperor Constantine by Bernini ( 1670 ) to the north .
Simplified: They are Charlemagne sculpted by Cornacchini ( 18th century ) to the south and Emperor Constantine by Bernini ( 1670 ) to the north .