Walking through the Museo Pio Clementino you find a courtyard, called the "Cortile della Pigna". Beyond is the main entrance of its library and the entrance to the Secret Archives of the Vatican. The entire courtyard is the roof of the Archives, which, as of safety reasons can withstand a nuclear attack.
The pine cone in the middle represents the pagan symbol of fertility, associated with the pagan and ancient Israeli god Baal, and the cult of the goddess Cybele. It is said to symbolize the pineal gland inside our brains. The shape of the papal tiara is based on it. According to an old Christian tradition, the pinecone symbolizes the testicles of those men offering themselves to be priests in the cults dedicated to Cybele, a female goddess. Cybele was worshiped as the goddess of fertility, the mother of Alma Mater. Significant is that Pope Celestine wanted to abolish the papal tiara, but he was prevented by his successor, Pope Boniface XIII, the man who wrote the Unam Sanctam which means ‘A holy catholic and apostolic church.’
In this Papal Bull he claimed mankind to be property of church and state.