The Temple of Antoninus and Faustina is near the entrance to the Forum. It’s one of the most surprising monuments in the whole place. The Senate dedicated it to the emperor Antoninus Pius and his wife, Faustina, deified after their death.
The temple is one of the few well-preserved buildings here because, during the Middle Ages, it was transformed into a church and thus escaped the quest for building material.
The door of the church opens as though suspended in mid-air at the center of the facade. This is evidence that, when the door was created, the level of the terrain that had deposited over the ruins of the Forum had reached that height!