Church of Santa Maria in Trastevere

Traditionally, this church is considered the first to have been opened for worship in Rome and in any case the first to be dedicated to the Virgin Mary. In this spot in 38 BC a fountain of oil flowed for a whole day. An event later construed as a miraculous annunciation of the birth of Christ.

This church was founded around 221 A.D. by Saint Calixtus and it was completely rebuilt at the dawn of the second millennium and again restructured in the 18th century.