Interior of the Baptistery
Baptistery of San Giovanni
The tradition that wants the Baptistery to be a Roman temple is well testified by its interior.
The vast domed room, which in its layout recalls the Pantheon, is in fact enriched by elements attributable to ancient monuments: monolithic columns, two sculpted sarcophagi, and part of the marble covering.
The flooring, on the other hand, evokes the Islamic world: oriental zodiacal motifs are recognizable in the "carpets" between the door of Paradise and the center of the hall, giving the effect of a magnificent crossroads.
At the center of the Baptistery was the ancient baptismal font, bordered by an octagonal fence, as evidenced by the perimeter traced on the floor.