Saint Peter’s Basilica took almost two centuries to plan and build, beginning in the 1400s. Its history involves twenty-
In the first century a.d., Rome was an empire-
Early Christians built a small shrine over Peter’s grave. Then, in a.d. 326, Emperor Constantine ordered the construction of a church on the site. Constantine was Rome’s first Christian emperor. His church was a basilica, a large church that held special ceremonies.