The Crypt of St. Gaius (end of the 3rd c.)
The Crypt of St. Gaius is of exceptional proportions and was used for community assemblies (3rd century).
In the oppositeThe Crypt of St.Eusebius
The Crypt of St.Eusebius was laid to rest pope (beginning of the 4th c.). In front of his tomb the Pope St. Damasus placed an inscription to celebrate the pope's and the Church's mercy towards the "lapsi", the apostates from the Christian Religion.