The remarkable Aelia Galla Placidia, shadow ruler…

The remarkable Aelia Galla Placidia, shadow ruler of the West, constructs of a number of churches in the western capital of Ravenna, including the small chapel usually—though wrongly—known as the Mausoleum of Galla Placidia, which contains some of the finest examples of early Byzantine mosaics.

The Basilica Eudoxiana is constructed in Rome with money from the empress Eudoxia for the veneration of the chains of St. Peter's Jerusalem imprisonment.

His Roman chain, added later, become famous after they are mentioned at the Council of Ephesus (431); construction on the basilica began the following year.

The first great church of Mary in Rome, Santa Maria Maggiore, is founded in 432, just after the Council of Ephesus, which raises the Virgin above all created things.

The earliest extant example of the baptistery, that of the Lateran palace in Rome, is built by Sixtus III, pope from 432.