St. Peter's Basilica Vatican City

64 CE
Martyrdom of the Apostle Peter on Vatican Hill
324
Constantine commissions St. Peter's Basilica in Rome
25 Dec 800
Charlemagne is crowned Roman Emperor at St. Peter's Basilica
1506
Reconstruction of St. Peter's Basilica begins under Pope Julius II
1546
Michelangelo appointed chief architect of St. Peter's Basilica
1585
Completion of the dome of St. Peter's begun by Michelangelo
1615
Completion of St. Peter's Basilica