The Christianization of sites that had been pagan occurred as a result of conversions in early Christian times, as well as an important part of the strategy of Interpretatio Christiana ("Christian reinterpretation") during the Christianization of pagan peoples. The landscape itself was Christianized, as prominent features were rededicated to Christian saints, sometimes quite directly, as when the island of Oglasa in the Tyrrhenian Sea was christened Montecristo.

Early Christianity

In the first centuries of Christianity churches were either house churches in whatever houses were offered for use by their owners, or were shrines on the burial-sites of martyrs or saints, which following the usual classical practice were invariably on the (then) edges of cities - the necropolis was always outside the polis. In Rome the early basilica churches of St. Peter's, Saint Paul Outside the Walls and San Lorenzo fuori le Mura, all follow this pattern. This distinction was gradually broken down, perhaps earliest in Roman Africa, as relics of the saints came to be kept in city-centre churches. By the 6th century bishops were often buried inside their cathedral, and other Christians followed.