The crossed keys of gold and silver symbolise the keys of the kingdom of heaven promised to Saint Peter, with authority to bind and loose (Matthew 16:18-19).
The triple crown (the tiara) represents "the three powers of the Supreme Pontiff: Sacred Orders, Jurisdiction and Magisterium", in other words: his functions as "supreme priest", "supreme pastor" and "supreme teacher".
The Papal Basilica of Saint Peter (Latin: Basilica Sancti Petri), officially known in Italian as Basilica Papale di San Pietro in Vaticano and commonly known as Saint Peter's Basilica, is a Late Renaissance church located within the Vatican City.
Together the paintings make up the greatest pictorial scheme of the Renaissance. Individually, some of Michelangelo's paintings on the ceiling are among the most notable works of western art ever created. The frescoes of the Sistine Chapel and in particular the ceiling and accompanying lunettes by Michelangelo have been subject to a number of restorations, the most recent taking place between 1980 and 1994. This most recent restoration had a profound effect on art lovers and historians, as colours and details that had not been seen for centuries were revealed.