Farewell to the majesty of Venice Square and enjoy the city street view of Rome, we walked to the "mouth of honesty" at the entrance of the Kosmedi Church (the fifth stop). There is a long line of tourists waiting to take pictures with the scenic spots. This is a disc carved with the head of the sea god. In the film "Roman Holiday", it is said that the hand is put in his mouth, and if he tells a lie, he can not pull it out. As a result, he frightens the lovely princess. In fact, this is only a well cover of the ancient Roman era. Instead of waiting in line, we entered the church and grabbed the gap to take pictures.